a ring of pliable material, as rubber or neoprene, used as a gasket: the failure of an O-ring caused the explosion that destroyed the space shuttle Challenger in 1986.
a rubber ring used in machinery as a seal against oil, air, etc
[awr-uh-noh-koh, ohr-; Spanish aw-ree-naw-kaw] /ˌɔr əˈnoʊ koʊ, ˌoʊr-; Spanish ˌɔ riˈnɔ kɔ/ noun 1. a river in N South America, flowing N from the border of Brazil, along the E border of Colombia, and NE through Venezuela to the Atlantic. 1600 miles (2575 km) long. /ˌɒrɪˈnəʊkəʊ/ noun 1. a river in N South America, rising […]
[awr-ee-ohl, ohr-] /ˈɔr iˌoʊl, ˈoʊr-/ noun 1. any of several usually brightly colored, passerine birds of the family Oriolidae, of the Old World. Compare . 2. any of several brightly colored passerine birds of the family Icteridae, of the New World. /ˈɔːrɪˌəʊl/ noun 1. any songbird of the mainly tropical Old World family Oriolidae, such […]
[uh-rahy-uh n] /əˈraɪ ən/ noun, genitive Orionis [awr-ee-oh-nis, or-, uh-rahy-uh-nis] /ˌɔr iˈoʊ nɪs, ˌɒr-, əˈraɪ ə nɪs/ (Show IPA), for 2. 1. Classical Mythology. a giant hunter who pursued the Pleiades, was eventually slain by Artemis, and was then placed in the sky as a constellation. 2. Astronomy. the Hunter, a constellation lying on the […]
[uh-rahy-uh-nidz, awr-ee-oh-, ohr-] /əˈraɪ ə nɪdz, ˌɔr iˈoʊ-, ˌoʊr-/ noun, (used with a plural verb) Astronomy. 1. a collection of meteors comprising a meteor shower (Orionid meteor shower) visible during October, and having its apparent origin in the constellation Orion.