Answer | Crossword Clue |
---|---|
theca | case or sheath enclosing an organ, structure, etc., as the horny covering of an insect pupa |
thecae | case or sheath enclosing an organ, structure, etc., as the horny covering of an insect pupa |
thecal | case or sheath enclosing an organ, structure, etc., as the horny covering of an insect pupa |