fossula

fossula [fos-yuh-luh] Word Origin noun, plural fos·su·lae [fos-yuh-lee] /ˈfɒs yəˌli/. Anatomy.

1. a small fossa.

Origin of fossula 1835–45; Latin: a little ditch. See fossa1, -ule fossula in Medicine fossula [fŏs′ə-lə, -yə-lə] n. pl. fos•su•lae (-lē′)

1. A small fossa.