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.
Usage note. The two senses of burgeon, âto budâ (The maples are burgeoning) and âto grow or flourishâ (The suburbs around the city have been burgeoning under the impact of commercial growth), date from the 14th century. Today the sense âto grow or flourishâ is the more common.