[kloh-ey-kuh] /kloʊˈeɪ kə/
noun, plural cloacae
[kloh-ey-see] /kloʊˈeɪ si/ (Show IPA)
a sewer, especially an ancient sewer.
noun (pl) -cae (-kiː)
a cavity in the pelvic region of most vertebrates, except higher mammals, and certain invertebrates, into which the alimentary canal and the genital and urinary ducts open
1650s, euphemism for “underground sewer,” from Latin cloaca “public sewer, drain,” from cluere “to cleanse,” from PIE root *kleue- “to wash, clean” (cf. Greek klyzein “to dash over, wash off, rinse out,” klysma “liquid used in a washing;” Lithuanian šluoju “to sweep;” Old English hlutor, Gothic hlutrs, Old High German hlutar, German lauter “pure, clear”). Use in biology, in reference to eliminatory systems of lower animals, is from 1834. Related: Cloacal (1650s); cloacinal (1857).
cloaca clo·a·ca (klō-ā’kə)
clo·a’cal (-kəl) adj.
Plural cloacae (klō-ā’sē’)
- Cloacal membrane
cloacal membrane n. A transitory membrane in the caudal area of the ventral wall of the embryo, forming a temporary barrier between the hindgut and the exterior.
- Cloacal plate
cloacal plate n. A structure in the embryo composed of endoderm and ectoderm that ruptures and forms the anal and urogenital openings.
/ˌkləʊəˈsaɪtɪs/ noun 1. (vet science) inflammation of the cloaca in birds, including domestic fowl, and other animals with a common opening of the urinary and gastrointestinal tracts
[klohk] /kloʊk/ noun 1. a loose outer garment, as a cape or coat. 2. something that covers or conceals; disguise; pretense: He conducts his affairs under a cloak of secrecy. verb (used with object) 3. to cover with or as if with a cloak: She arrived at the opera cloaked in green velvet. 4. to […]