See Also: melanoblast(medicine)

boulder (iou) and melanoblast (medicine)


boulder (iou)



boulder noun & verb. Also *bowlder. LME.
[Shortened from BOULDERSTONE.]
A. noun. A large water- or weather-worn stone. LME.
Comb.: boulder-clay Geology clay containing many large stones and boulders, formed by deposition from melting glaciers and ice sheets.
b. verb.
verb trans. Make into boulders. rare. M19.
verb intrans. Climb large boulders. Chiefly as bouldering verbal noun. E20.
bouldery adjective characterized by the presence of boulders M19.

melanoblast (medicine)


melanoblast


A cell derived from the neural crest; it migrates to various parts of the body early in embryonic life, and then becomes a mature melanocyte capable of forming melanin.

Origin: melano-+ G. Blastos, germ, sprout