3 files changed, 5 insertions, 5 deletions
diff --git a/src/libcore/num/dec2flt/rawfp.rs b/src/libcore/num/dec2flt/rawfp.rs
index 2a60292d023..12960fed045 100644
--- a/src/libcore/num/dec2flt/rawfp.rs
+++ b/src/libcore/num/dec2flt/rawfp.rs
@@ -102,10 +102,10 @@ pub trait RawFloat : Float + Copy + Debug + LowerExp
     /// The number of bits in the exponent.
     const EXP_BITS: u8;
 
-    /// The number of bits in the singificand, *including* the hidden bit.
+    /// The number of bits in the significand, *including* the hidden bit.
     const SIG_BITS: u8;
 
-    /// The number of bits in the singificand, *excluding* the hidden bit.
+    /// The number of bits in the significand, *excluding* the hidden bit.
     const EXPLICIT_SIG_BITS: u8;
 
     /// The maximum legal exponent in fractional representation.
@@ -123,7 +123,7 @@ pub trait RawFloat : Float + Copy + Debug + LowerExp
     /// `MIN_EXP` for integral representation, i.e., with the shift applied.
     const MIN_EXP_INT: i16;
 
-    /// The maximum normalized singificand in integral representation.
+    /// The maximum normalized significand in integral representation.
     const MAX_SIG: u64;
 
     /// The minimal normalized significand in integral representation.
diff --git a/src/libcore/ops/try.rs b/src/libcore/ops/try.rs
index 4971e825a6f..78326c3e639 100644
--- a/src/libcore/ops/try.rs
+++ b/src/libcore/ops/try.rs
@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-/// A trait for customizing the behaviour of the `?` operator.
+/// A trait for customizing the behavior of the `?` operator.
 ///
 /// A type implementing `Try` is one that has a canonical way to view it
 /// in terms of a success/failure dichotomy.  This trait allows both
diff --git a/src/libcore/sync/atomic.rs b/src/libcore/sync/atomic.rs
index d647a94a1ef..510e01db0e9 100644
--- a/src/libcore/sync/atomic.rs
+++ b/src/libcore/sync/atomic.rs
@@ -1632,7 +1632,7 @@ unsafe fn atomic_xor<T>(dst: *mut T, val: T, order: Ordering) -> T {
 ///
 ///     pub fn lock(&self) {
 ///         while !self.flag.compare_and_swap(false, true, Ordering::Relaxed) {}
-///         // This fence syncronizes-with store in `unlock`.
+///         // This fence synchronizes-with store in `unlock`.
 ///         fence(Ordering::Acquire);
 ///     }
 ///