diff --git a/src/lib.rs b/src/lib.rs
index 317ef89e..c2a6ac9c 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -147,8 +147,8 @@ pub use traits::{
     Norm,
     Orig,
     Outer,
-    PartialOrd,
-    PartialOrdering,
+    POrd,
+    POrdering,
     PntAsVec,
     RMul,
     Rotate, Rotation, RotationMatrix, RotationWithTranslation,
@@ -228,7 +228,7 @@ pub mod overload {
 
 /// Change the input value to ensure it is on the range `[min, max]`.
 #[inline(always)]
-pub fn clamp<T: cmp::PartialOrd>(val: T, min: T, max: T) -> T {
+pub fn clamp<T: PartialOrd>(val: T, min: T, max: T) -> T {
     if val > min {
         if val < max {
             val
@@ -256,63 +256,63 @@ pub fn min<T: Ord>(a: T, b: T) -> T {
 
 /// Returns the infimum of `a` and `b`.
 #[inline(always)]
-pub fn inf<T: PartialOrd>(a: &T, b: &T) -> T {
-    PartialOrd::inf(a, b)
+pub fn inf<T: POrd>(a: &T, b: &T) -> T {
+    POrd::inf(a, b)
 }
 
 /// Returns the supremum of `a` and `b`.
 #[inline(always)]
-pub fn sup<T: PartialOrd>(a: &T, b: &T) -> T {
-    PartialOrd::sup(a, b)
+pub fn sup<T: POrd>(a: &T, b: &T) -> T {
+    POrd::sup(a, b)
 }
 
 /// Compare `a` and `b` using a partial ordering relation.
 #[inline(always)]
-pub fn partial_cmp<T: PartialOrd>(a: &T, b: &T) -> PartialOrdering {
-    PartialOrd::partial_cmp(a, b)
+pub fn partial_cmp<T: POrd>(a: &T, b: &T) -> POrdering {
+    POrd::partial_cmp(a, b)
 }
 
 /// Returns `true` iff `a` and `b` are comparable and `a < b`.
 #[inline(always)]
-pub fn partial_lt<T: PartialOrd>(a: &T, b: &T) -> bool {
-    PartialOrd::partial_lt(a, b)
+pub fn partial_lt<T: POrd>(a: &T, b: &T) -> bool {
+    POrd::partial_lt(a, b)
 }
 
 /// Returns `true` iff `a` and `b` are comparable and `a <= b`.
 #[inline(always)]
-pub fn partial_le<T: PartialOrd>(a: &T, b: &T) -> bool {
-    PartialOrd::partial_le(a, b)
+pub fn partial_le<T: POrd>(a: &T, b: &T) -> bool {
+    POrd::partial_le(a, b)
 }
 
 /// Returns `true` iff `a` and `b` are comparable and `a > b`.
 #[inline(always)]
-pub fn partial_gt<T: PartialOrd>(a: &T, b: &T) -> bool {
-    PartialOrd::partial_gt(a, b)
+pub fn partial_gt<T: POrd>(a: &T, b: &T) -> bool {
+    POrd::partial_gt(a, b)
 }
 
 /// Returns `true` iff `a` and `b` are comparable and `a >= b`.
 #[inline(always)]
-pub fn partial_ge<T: PartialOrd>(a: &T, b: &T) -> bool {
-    PartialOrd::partial_ge(a, b)
+pub fn partial_ge<T: POrd>(a: &T, b: &T) -> bool {
+    POrd::partial_ge(a, b)
 }
 
 /// Return the minimum of `a` and `b` if they are comparable.
 #[inline(always)]
-pub fn partial_min<'a, T: PartialOrd>(a: &'a T, b: &'a T) -> Option<&'a T> {
-    PartialOrd::partial_min(a, b)
+pub fn partial_min<'a, T: POrd>(a: &'a T, b: &'a T) -> Option<&'a T> {
+    POrd::partial_min(a, b)
 }
 
 /// Return the maximum of `a` and `b` if they are comparable.
 #[inline(always)]
-pub fn partial_max<'a, T: PartialOrd>(a: &'a T, b: &'a T) -> Option<&'a T> {
-    PartialOrd::partial_max(a, b)
+pub fn partial_max<'a, T: POrd>(a: &'a T, b: &'a T) -> Option<&'a T> {
+    POrd::partial_max(a, b)
 }
 
 /// Clamp `value` between `min` and `max`. Returns `None` if `value` is not comparable to
 /// `min` or `max`.
 #[inline(always)]
-pub fn partial_clamp<'a, T: PartialOrd>(value: &'a T, min: &'a T, max: &'a T) -> Option<&'a T> {
-    PartialOrd::partial_clamp(value, min, max)
+pub fn partial_clamp<'a, T: POrd>(value: &'a T, min: &'a T, max: &'a T) -> Option<&'a T> {
+    POrd::partial_clamp(value, min, max)
 }
 
 //
diff --git a/src/structs/pnt.rs b/src/structs/pnt.rs
index a980d70f..7e0b1f3c 100644
--- a/src/structs/pnt.rs
+++ b/src/structs/pnt.rs
@@ -6,7 +6,7 @@ use std::mem;
 use std::num::{Zero, One, Bounded};
 use std::slice::{Items, MutItems};
 use std::iter::{Iterator, FromIterator};
-use traits::operations::{ApproxEq, PartialOrd, PartialOrdering, PartialLess, PartialEqual,
+use traits::operations::{ApproxEq, POrd, POrdering, PartialLess, PartialEqual,
                          PartialGreater, NotComparable, Axpy};
 use traits::structure::{Cast, Dim, Indexable, Iterable, IterableMut, PntAsVec};
 use traits::geometry::{Orig, FromHomogeneous, ToHomogeneous};
diff --git a/src/structs/quat.rs b/src/structs/quat.rs
index 266df2a6..268d4674 100644
--- a/src/structs/quat.rs
+++ b/src/structs/quat.rs
@@ -8,7 +8,7 @@ use std::num;
 use std::rand::{Rand, Rng};
 use std::slice::{Items, MutItems};
 use structs::{Vec3, Pnt3, Rot3, Mat3, Vec3MulRhs, Pnt3MulRhs};
-use traits::operations::{ApproxEq, Inv, PartialOrd, PartialOrdering, NotComparable, PartialLess,
+use traits::operations::{ApproxEq, Inv, POrd, POrdering, NotComparable, PartialLess,
                          PartialGreater, PartialEqual, Axpy};
 use traits::structure::{Cast, Indexable, Iterable, IterableMut, Dim};
 use traits::geometry::{Norm, Cross, Rotation, Rotate, Transform};
diff --git a/src/structs/vec.rs b/src/structs/vec.rs
index 45c7dc29..995fa9fa 100644
--- a/src/structs/vec.rs
+++ b/src/structs/vec.rs
@@ -6,7 +6,7 @@ use std::mem;
 use std::num::{Zero, One, Float, Bounded};
 use std::slice::{Items, MutItems};
 use std::iter::{Iterator, FromIterator};
-use traits::operations::{ApproxEq, PartialOrd, PartialOrdering, PartialLess, PartialEqual,
+use traits::operations::{ApproxEq, POrd, POrdering, PartialLess, PartialEqual,
                          PartialGreater, NotComparable, Axpy};
 use traits::geometry::{Transform, Rotate, FromHomogeneous, ToHomogeneous, Dot, Norm,
                        Translation, Translate};
diff --git a/src/structs/vec_macros.rs b/src/structs/vec_macros.rs
index 5145723b..0947cd3b 100644
--- a/src/structs/vec_macros.rs
+++ b/src/structs/vec_macros.rs
@@ -58,7 +58,7 @@ macro_rules! at_fast_impl(
 // However, f32/f64 does not implement Ord…
 macro_rules! ord_impl(
     ($t: ident, $comp0: ident $(,$compN: ident)*) => (
-        impl<N: FloatMath + Clone> PartialOrd for $t<N> {
+        impl<N: FloatMath + Clone> POrd for $t<N> {
             #[inline]
             fn inf(a: &$t<N>, b: &$t<N>) -> $t<N> {
                 $t::new(a.$comp0.min(b.$comp0.clone())
@@ -73,7 +73,7 @@ macro_rules! ord_impl(
 
             #[inline]
             #[allow(unused_mut)] // otherwise there will be a warning for is_eq or Vec1.
-            fn partial_cmp(a: &$t<N>, b: &$t<N>) -> PartialOrdering {
+            fn partial_cmp(a: &$t<N>, b: &$t<N>) -> POrdering {
                 let is_lt     = a.$comp0 <  b.$comp0;
                 let mut is_eq = a.$comp0 == b.$comp0;
 
diff --git a/src/traits/mod.rs b/src/traits/mod.rs
index eb7e8f8b..7d1c53a3 100644
--- a/src/traits/mod.rs
+++ b/src/traits/mod.rs
@@ -8,9 +8,9 @@ pub use self::structure::{FloatVec, FloatVecExt, FloatPnt, FloatPntExt, Basis, C
                           Indexable, Iterable, IterableMut, Mat, Row, AnyVec, AnyVecExt, AnyPnt,
                           AnyPntExt, PntAsVec, VecAsPnt, ColSlice, RowSlice, Diag, Eye};
 
-pub use self::operations::{Absolute, ApproxEq, Axpy, Cov, Det, Inv, LMul, Mean, Outer, PartialOrd,
+pub use self::operations::{Absolute, ApproxEq, Axpy, Cov, Det, Inv, LMul, Mean, Outer, POrd,
                            RMul, ScalarAdd, ScalarSub, ScalarMul, ScalarDiv, Transpose};
-pub use self::operations::{PartialOrdering, PartialLess, PartialEqual, PartialGreater, NotComparable};
+pub use self::operations::{POrdering, PartialLess, PartialEqual, PartialGreater, NotComparable};
 
 pub mod geometry;
 pub mod structure;
diff --git a/src/traits/operations.rs b/src/traits/operations.rs
index 63901be9..430b1d2f 100644
--- a/src/traits/operations.rs
+++ b/src/traits/operations.rs
@@ -4,7 +4,7 @@
 
 /// Result of a partial ordering.
 #[deriving(Eq, PartialEq, Encodable, Decodable, Clone, Show)]
-pub enum PartialOrdering {
+pub enum POrdering {
     /// Result of a strict comparison.
     PartialLess,
     /// Equality relationship.
@@ -15,7 +15,7 @@ pub enum PartialOrdering {
     NotComparable
 }
 
-impl PartialOrdering {
+impl POrdering {
     /// Returns `true` if `self` is equal to `Equal`.
     pub fn is_eq(&self) -> bool {
         *self == PartialEqual
@@ -46,8 +46,8 @@ impl PartialOrdering {
         *self == NotComparable
     }
 
-    /// Creates a `PartialOrdering` from an `Ordering`.
-    pub fn from_ordering(ord: Ordering) -> PartialOrdering {
+    /// Creates a `POrdering` from an `Ordering`.
+    pub fn from_ordering(ord: Ordering) -> POrdering {
         match ord {
             Less    => PartialLess,
             Equal   => PartialEqual,
@@ -55,7 +55,7 @@ impl PartialOrdering {
         }
     }
 
-    /// Converts this `PartialOrdering` to an `Ordering`.
+    /// Converts this `POrdering` to an `Ordering`.
     ///
     /// Returns `None` if `self` is `NotComparable`.
     pub fn to_ordering(self) -> Option<Ordering> {
@@ -69,7 +69,7 @@ impl PartialOrdering {
 }
 
 /// Pointwise ordering operations.
-pub trait PartialOrd {
+pub trait POrd {
     /// Returns the infimum of `a` and `b`.
     fn inf(a: &Self, b: &Self) -> Self;
 
@@ -77,36 +77,36 @@ pub trait PartialOrd {
     fn sup(a: &Self, b: &Self) -> Self;
 
     /// Compare `a` and `b` using a partial ordering relation.
-    fn partial_cmp(a: &Self, b: &Self) -> PartialOrdering;
+    fn partial_cmp(a: &Self, b: &Self) -> POrdering;
 
     /// Returns `true` iff `a` and `b` are comparable and `a <= b`.
     #[inline]
     fn partial_le(a: &Self, b: &Self) -> bool {
-        PartialOrd::partial_cmp(a, b).is_le()
+        POrd::partial_cmp(a, b).is_le()
     }
 
     /// Returns `true` iff `a` and `b` are comparable and `a < b`.
     #[inline]
     fn partial_lt(a: &Self, b: &Self) -> bool {
-        PartialOrd::partial_cmp(a, b).is_lt()
+        POrd::partial_cmp(a, b).is_lt()
     }
 
     /// Returns `true` iff `a` and `b` are comparable and `a >= b`.
     #[inline]
     fn partial_ge(a: &Self, b: &Self) -> bool {
-        PartialOrd::partial_cmp(a, b).is_ge()
+        POrd::partial_cmp(a, b).is_ge()
     }
 
     /// Returns `true` iff `a` and `b` are comparable and `a > b`.
     #[inline]
     fn partial_gt(a: &Self, b: &Self) -> bool {
-        PartialOrd::partial_cmp(a, b).is_gt()
+        POrd::partial_cmp(a, b).is_gt()
     }
 
     /// Return the minimum of `a` and `b` if they are comparable.
     #[inline]
     fn partial_min<'a>(a: &'a Self, b: &'a Self) -> Option<&'a Self> {
-        match PartialOrd::partial_cmp(a, b) {
+        match POrd::partial_cmp(a, b) {
             PartialLess | PartialEqual => Some(a),
             PartialGreater             => Some(b),
             NotComparable              => None
@@ -116,7 +116,7 @@ pub trait PartialOrd {
     /// Return the maximum of `a` and `b` if they are comparable.
     #[inline]
     fn partial_max<'a>(a: &'a Self, b: &'a Self) -> Option<&'a Self> {
-        match PartialOrd::partial_cmp(a, b) {
+        match POrd::partial_cmp(a, b) {
             PartialGreater | PartialEqual => Some(a),
             PartialLess                   => Some(b),
             NotComparable                 => None
@@ -127,8 +127,8 @@ pub trait PartialOrd {
     /// `min` or `max`.
     #[inline]
     fn partial_clamp<'a>(value: &'a Self, min: &'a Self, max: &'a Self) -> Option<&'a Self> {
-        let v_min = PartialOrd::partial_cmp(value, min);
-        let v_max = PartialOrd::partial_cmp(value, max);
+        let v_min = POrd::partial_cmp(value, min);
+        let v_max = POrd::partial_cmp(value, max);
 
         if v_min.is_not_comparable() || v_max.is_not_comparable() {
             None