nounπShareAny external case or sheath."The pollen grain was protected by a tough, outer theca. "partanatomybiologyChat with AIVocabulary GamePractice Reading
nounπShareThe pollen-producing organ usually found in pairs and forming an anther."The botanist pointed out the theca of the lily's stamen, explaining that it was one of the two compartments within the anther responsible for producing pollen. "biologyplantorganpartanatomyChat with AIVocabulary GamePractice Reading
nounπShareThe twin layers of cells surrounding the basal lamina of an ovarian follicle."The theca, surrounding the developing egg, plays a crucial role in hormone production within the ovary. "anatomyorganbiologymedicinephysiologysexChat with AIVocabulary GamePractice Reading
nounπShareThe membrane complex enveloping the cells of certain plankton including diatoms and dinoflagellates."Under a microscope, the intricate beauty of the dinoflagellate's theca was clearly visible, protecting the cell within. "biologymicroorganismplantorganismenvironmentecologyChat with AIVocabulary GamePractice Reading
nounπShareThe calcareous wall of a corallite, the exoskeleton of a coral polyp."The diver carefully brushed away sediment to reveal the delicate structure of the theca, the coral polyp's protective outer wall. "organismbiologyanimaloceanstructuregeologyChat with AIVocabulary GamePractice Reading
nounπShareA case for the corporal cloth used in the Eucharist."The priest carefully placed the freshly laundered corporal cloth back into its theca after the morning's service. "religionritualChat with AIVocabulary GamePractice Reading
