a halo phenomenon in which a vertical streak of light appears above and below the moon, believed to be caused by the reflection of moonlight by ice crystals with vertical axes.
- Moon pool
noun 1. (in the oil industry) an open shaft in the centre of the hull of a ship engaged in deep-sea drilling through which drilling takes place
[moon-prohb] /ˈmunˌproʊb/ noun 1. an information-gathering spacecraft designed to pass close by or land on the lunar surface.
[moon-kweyk] /ˈmunˌkweɪk/ noun 1. a seismic vibration of the surface. /ˈmuːnˌkweɪk/ noun 1. a light tremor of the moon, detected on the moon’s surface
- Moon rat
noun 1. a ratlike SE Asian nocturnal mammal, Echinosorex gymnurus, with greyish fur and an elongated snout: family Erinaceidae (hedgehogs): the largest living insectivore