|—n , pl -cae|
|1.||botany an enclosing organ, cell, or spore case, esp the capsule of a moss|
|2.||zoology a hard outer covering, such as the cup-shaped container of a coral polyp|
|[C17: from Latin thēca, from Greek thēkē case; related to Greek tithenai to place]|
|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|
|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
theca the·ca (thē'kə)
n. pl. the·cae (-sē', -kē')
A case, covering, or sheath, such as the outer covering of the cocoon of certain insects.
|theca (thē'kə) Pronunciation Key
Plural thecae (thē'sē', -kē')
A case, covering, or sheath, such as the pollen sac of an anther, the spore case of a moss, or the outer covering of the pupa of certain insects.