diff --git a/serde/src/de/mod.rs b/serde/src/de/mod.rs
index 625ed450..89d4a792 100644
--- a/serde/src/de/mod.rs
+++ b/serde/src/de/mod.rs
@@ -715,7 +715,7 @@ where
 ///  - newtype_variant
 ///    - the `E::N` in `enum E { N(u8) }`
 ///  - seq
-///    - a dynamically sized sequence of values, for example `Vec<T>` or
+///    - a variably sized sequence of values, for example `Vec<T>` or
 ///      `HashSet<T>`
 ///  - seq_fixed_size
 ///    - a statically sized sequence of values for which the size will be known
diff --git a/serde/src/ser/mod.rs b/serde/src/ser/mod.rs
index e3549207..4978703a 100644
--- a/serde/src/ser/mod.rs
+++ b/serde/src/ser/mod.rs
@@ -264,7 +264,7 @@ pub trait Serialize {
 ///  - newtype_variant
 ///    - the `E::N` in `enum E { N(u8) }`
 ///  - seq
-///    - a dynamically sized sequence of values, for example `Vec<T>` or
+///    - a variably sized sequence of values, for example `Vec<T>` or
 ///      `HashSet<T>`
 ///  - seq_fixed_size
 ///    - a statically sized sequence of values for which the size will be known
@@ -552,7 +552,7 @@ pub trait Serializer: Sized {
     where
         T: Serialize;
 
-    /// Begin to serialize a dynamically sized sequence. This call must be
+    /// Begin to serialize a variably sized sequence. This call must be
     /// followed by zero or more calls to `serialize_element`, then a call to
     /// `end`.
     ///