somni-


Also found in: Medical.

somni-

(word root) sleep
Examples of words with the root somni-: insomnia

somni-

or somn-
pref.
Sleep: somnambulate.

[From Latin somnus, sleep; see swep- in Indo-European roots.]

somni-

or before a vowel

somn-

combining form
sleep: somniferous.
[from Latin somnus]