prothallium
(biochemistry) A derivative of methanopterin
(astronomy) A winter constellation of the southern sky, said to resemble a small serpent. It lies between the constellations Mensa and Tucana. It is not to be confused with the constellation Hydra.
Someone who spreads fear, or needlessly raises the alarm.
A plant, usually a pteridophyte, in gametophyte stage in the metagenesis cycle. / The young gametophyte of a liverwort or peat moss.
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