giant molecular cloud
A cloud of molecular hydrogen typically located in the arm of a spiral galaxy, believed to be an area of active star formation. Protostars are located in the densest regions of such clouds. See more at protostar.
noun 1. a large brown South American river otter, Pteronura brasiliensis, having a creamy chest patch and a long flat tail with a flanged border, hunted for its hide: now greatly reduced in number and endangered in some areas.
noun 1. (def 2). noun 1. See panda (sense 1)
- Giant peacock moth
noun 1. the largest European moth, an emperor, Saturnia pyri, reaching 15 cm (6 in.) in wingspan. It is mottled brown with a prominent ocellus on each wing and being night-flying can be mistaken for a bat
noun 1. either of two large white or brownish petrels of the genus Macronectes, of the Antarctic Ocean and adjacent seas.