Os
Two Latin words used in medicine that have different meanings and pronunciations.
<B>1.</B> The mouth: <B>a.</B> The upper opening of the digestive tract.
<B>b.</B> Any opening or aperture in the body.
The o in os meaning mouth or opening is pronounced as in hope.
The genitive form of os is oris from which comes the word oral.
<B>2.</B> Bone, as in the os sacrum.
The o in os meaning bone is pronounced as in often.
The genitive form of os is ossis from which comes the word osseous, pertaining to bone.