单词 | gram |
释义 | gram1 or gramme /gram/nounA unit of mass in the metric system, formerly that of a cubic centimetre of water at 4ºC, now a thousandth part of the International Prototype Kilogram (see kilogram under kilo-) ORIGIN: Fr gramme, from L gramma, from Gr gramma a letter, a small weight gram-atˈom or gram-atomic weight, gram-molˈecule or gram-molecular weight noun The quantity of an element, or a compound, whose mass in grams is equal to its atomic weight and molecular weight respectively (a now discarded concept; see mole4) gram-equivˈalent or gram-equivalent weight noun The quantity of a substance whose mass in grams is equal to its equivalent weight gram2 /gram/noun
ORIGIN: Port grão (sometimes gram), from L grānum a grain gram flour noun Flour made from ground chickpeas black gram see urd gram3 /gram/ or grame /grām/ (obsolete)noun
ORIGIN: OE grama, anger gram4 /gräm/nounAn Indian village ORIGIN: Hindi -gram /-gram/combining form
ORIGIN: Gr gramma letter; later use follows ‘singing telegram’ gramicidin /gram-i-sīˈdin/nounAn antibiotic obtained from certain bacteria, used against Gram-positive bacteria (also gramicidin D) ORIGIN: HCJ Gram (1853–1938), Danish bacteriologist who devised the method, and L caedere to kill Gram-negˈative (also gram-) adjective Losing a stain of methyl violet and iodine on treatment with alcohol Gram-posˈitive (also gram-) adjective Retaining the stain |
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