n pl , -ties
1 the state or quality of being active
2 lively action or movement
3 any specific deed, action, pursuit, etc.
4 the number of disintegrations of a radioactive substance in a given unit of time, usually expressed in curies or disintegrations per second
a the capacity of a substance to undergo chemical change
b the effective concentration of a substance in a chemical system. The absolute activity of a substance B, λB, is defined as exp (μBRT) where μB is the chemical potential
1 (Psychol) behaviour that occurs typically when there is a conflict between motives and that has no relevance to either motive: e.g. head scratching
2 (Zoology) the substitution of a pattern of animal behaviour that is different from behaviour relevant to the situation: e.g. preening at an apparently inappropriate time
n the ability of substances that are optical isomers to rotate the plane of polarization of a transmitted beam of plane-polarized light
n (Ethology) instinctive behaviour occurring in the absence of the appropriate stimulus
Diccionario de inglés definición
1 action, activeness, animation, bustle, enterprise, exercise, exertion, hurly-burly, hustle, labour, life, liveliness, motion, movement, stir, work
2 act, avocation, deed, endeavour, enterprise, hobby, interest, job, labour, occupation, pastime, project, pursuit, scheme, task, undertaking, venture, work
1 dullness, idleness, immobility, inaction, inactivity, indolence, inertia, lethargy, passivity, sluggishness, torpor
Diccionario de inglés sinónimos
sphere of activity
un champ d'activité
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"Collins English Dictionary 5th Edition first published in 2000 © HarperCollins Publishers 1979, 1986, 1991, 1994, 1998, 2000 and Collins A-Z Thesaurus 1st edition first published in 1995 © HarperCollins Publishers 1995"