WordReference Random House Unabridged Dictionary of American English © 2025
the•ci•um
(thē′shē əm, -sē əm),USA pronunciation n., pl. -ci•a (-shē ə, -sē ə).USA pronunciation [Mycol.]
the′ci•al, adj.
- Fungihymenium.
- Greek thēkíon, diminutive of thé̄kē theca; see -ium
- Neo-Latin
- 1880–85
'thecium' also found in these entries (note: many are not synonyms or translations):