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(Units) an amount of a compound equal to its molecular weight expressed in grams: now replaced by the mole. See mole4
ˌgram-moˈlecular, gram-molar adj
1. any of various small, insect-eating mammals, esp. of the family Talpidae, living chiefly underground and having velvety fur, very small eyes, and strong forefeet.
2. a spy who becomes part of and works from within the ranks of an enemy governmental staff or intelligence agency.
3. a large, powerful machine used in the construction of tunnels.
[1350–1400; Middle English molle; akin to Middle Dutch, Middle Low German mol]
a small, congenital spot or blemish on the human skin, usu. of a dark color, slightly elevated, and sometimes hairy; nevus.
[before 1000; Old English māl; c. Old High German meil spot, Gothic mail wrinkle]
1. a massive structure, esp. of stone, set up in the water, as for a breakwater or a pier.
2. an anchorage or harbor protected by such a structure.
[1540–50; < Latin mōlēs mass, dam, mole]
the quantity of a substance the weight of which equals the substance's molecular weight expressed in grams, and which contains 6.02 x 1023 molecules of the substance.
[< German Mol (1900), short for Molekül molecule]
a mass in the uterus formed by malformed embryonic or placental tissue.
[1605–15; < New Latin mola millstone]
a spicy Mexican sauce made with chocolate and chili peppers.
[1925–30; < Mexican Spanish < Nahuatl mōlli sauce]