diff --git a/README.md b/README.md
index fe42206..04f7089 100644
--- a/README.md
+++ b/README.md
@@ -9,20 +9,20 @@
 [![ColPrac: Contributor's Guide on Collaborative Practices for Community Packages](https://img.shields.io/badge/ColPrac-Contributor's%20Guide-blueviolet)](https://github.com/SciML/ColPrac)
 
 
-This is a package for extra Positive (Semi-) Definated Matrix types.
+This is a package for extra Positive (Semi-) Definite Matrix types.
 It is an extension to [PDMats.jl](https://github.com/JuliaStats/PDMats.jl).
 
 It probably wouldn't exist, except Distributions.jl is currently very tied to the idea that the type of a covariance matrix should subtype `AbstractPDMat`.
 There is [an issue open to change that](https://github.com/JuliaStats/Distributions.jl/issues/1219).
-When that is resolve the matrix defined here may well move elsewhere, or cease to be required.
+When that is resolved the matrix defined here may well move elsewhere, or cease to be required.
 
 ## The Matrixes
 
 ### PSDMat
 A Positive Semi-Definite Matrix.
 It still subtypes `AbstractPDMat`.
-It's not quite as nice to work with as a truely positive definite matrix, since the math doesn't work out so well.
-But this is able to represent all covariences -- which must be positive *semi*-definate.
+It's not quite as nice to work with as a truly positive definite matrix, since the math doesn't work out so well.
+But this is able to represent all covariances -- which must be positive *semi*-definite.
 You might not like the consequences,
 
 ```julia