an unstructured, often rambling vocalization of low volume heard in young birds and, at the start of the breeding season, in adult birds of certain species.
a subdued form of birdsong modified from the full territorial song and used by some birds esp in courtship
adjective 1. noting or pertaining to a speed less than that of sound in air at the same height above sea level. 2. infrasonic. adjective 1. being, having, or travelling at a velocity below that of sound: a subsonic aircraft subsonic (sŭb-sŏn’ĭk) Having a speed less than that of sound in a designated medium, usually […]
noun 1. a monarch; a king, queen, or other supreme ruler. 2. a person who has supreme power or authority. 3. a group or body of persons or a state having sovereign authority. 4. a gold coin of the United Kingdom, equal to one pound sterling: went out of circulation after 1914. adjective 5. belonging […]
noun 1. a smaller space within a main area that has been divided or subdivided: The jewelry shop occupies a subspace in the hotel’s lobby. 2. Mathematics. a subset of a given space. Also called linear manifold. a subset of a vector space which is itself a vector space. a subset of a topological space, […]