Webster's 1913 Dictionary
OOTHECA; OOETHECA
O `ö *the "ca, n.; pl. Oöthecæ. Etym: [NL. , fr. Gr. (Zoöl.)
Defn: An egg case, especially those of many kinds of mollusks, and of some insects, as the cockroach. Cf. Ooecium.
New American Oxford Dictionary
ootheca
o o the ca |ˌōəˈTHēkə ˌoʊəˈθikə | ▶noun ( pl. oothecae |-ˌsē, -ˌkē | ) Entomology the egg case of cockroaches, mantises, and related insects. ORIGIN mid 19th cent.: from oo- ‘of an egg ’ + Greek thēkē ‘receptacle. ’
Oxford Dictionary
ootheca
ootheca |ˌəʊəˈθiːkə | ▶noun ( pl. oothecae |-kiː | ) Entomology the egg case of cockroaches, mantises, and related insects. ORIGIN mid 19th cent.: from oo- ‘of an egg ’ + Greek thēkē ‘receptacle ’.
The Wordsmith Dictionary