[ong-koh-ser-kahy-uh-sis] /ˌɒŋ koʊ sərˈkaɪ ə sɪs/
an infestation with filarial worms of the genus Onchocerca, common in tropical America and Africa, transmitted by black flies, and characterized by nodules under the skin, an itchy rash, eye lesions, and in severe cases, elephantiasis.
noun (pl) -ses (-siːz)
a disease found in parts of Africa and tropical America that is caused by a parasitic worm, Onchocerca volvulus, and transmitted to humans by various species of black fly. It results in inflammation of the skin and in some cases blindness Also called river blindness
onchocerciasis on·cho·cer·ci·a·sis (ŏng’kō-sər-kī’ə-sĭs) or on·cho·cer·co·sis (-sər-kō’sĭs)
A disease occurring in tropical Africa and Central America, transmitted by black flies and caused by infestation with filariform nematodes of the genus Onchocerca, especially O. volvulus, and characterized by nodular swellings on the skin and lesions of the eyes. Also called river blindness, volvulosis.
[on-sid-ee-uh m] /ɒnˈsɪd i əm/ noun 1. any of numerous tropical American orchids of the genus Oncidium, having clusters of flowers showing great variety in size, form, and color.
- On cloud nine
adjective phrase At the very pinnacle of bliss; euphoric; on a cloud: She came back home and he’s on cloud nine (1950s+) Blissfully happy, as in Ever since he proposed to her, her parents have been on cloud nine. The exact allusion of nine in this term is unclear, and different figures, especially seven (perhaps […]
1. a combining form meaning “tumor,” “mass,” used in the formation of compound words: oncogenic. combining form 1. denoting a tumour: oncology word-forming element meaning “bulk, mass,” especially in medical use, “tumor,” from Latinized form of Greek onko-, comb. form of onkos “bulk, size, mass, body.” onco- pref.
oncocyte on·co·cyte (ŏng’kə-sīt’) n. A large granular acidophilic tumor cell having numerous mitochondria.