Mammals (class Mammalia /mÉËmeÉªli.É/ from Latin mamma breast) are a clade of endothermic amniotes distinguished from reptiles and birds by the possession of a neocortex (a region of the brain), hair, three middle ear bones and mammary glands.
Wiktionary(0.00 / 0 votes)Rate this definition: 1  burgeoning(Noun) the act of budding or sprouting. 2  burgeoning(Noun) a bud or branch. 3  burgeoning(Noun) a new growth or expansion of something.  burgeoning(Adjective) that buds, grows or expands; developing.
verb (used without object), grew, grown, growing. 1. to increase by natural development, as any living organism or part by assimilation of nutriment; increase in size or substance. 2. to form and increase in size by a process of inorganic accretion, as by crystallization.