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.
proÂ·lifÂ·erÂ·ate. v. proÂ·lifÂ·erÂ·atÂ·ed, proÂ·lifÂ·erÂ·atÂ·ing, proÂ·lifÂ·erÂ·ates. v. intr. 1. To grow or multiply by rapidly producing new tissue, parts, cells, or offspring. 2. To increase or spread at a rapid rate: fears that nuclear weapons might proliferate. v. tr.To cause to grow or increase rapidly.. proliferation-a rapid increase in number (especially a rapid increase in the number of deadly weapons); the proliferation of nuclear weapons. increment, growth, increase-a process of becoming larger or longer or more numerous or more important; the increase in unemployment; the growth of population.