in der Biol. alles, was von außen her auf den Körper, seine Organe oder seine Zellen einwirkt. Die Fähigkeit der Zellen, den R. zu beantworten, ist die R.barkeit. Ob der R. eine Reaktion auslöst, hängt davon ab, ob ein bestimmter Schwellenwert (R.schwelle) überschritten wird.
von außen oder aus dem Innern kommende Veränderung, die der Organismus registriert und mit einem Reflex, einer Reaktion oder auch bloß einer Wahrnehmung beantwortet.
The power to entice or attract through personal charm; SYN. allurement, temptingness.
Attractiveness; seductiveness; charmingness
ETYM French charme, from Latin carmen song, verse, incantation, for casmen, akin to Skr. çasman, çasâ, a laudatory song, from a root signifying to praise, to sing.
Something believed to bring good luck; SYN. good luck charm.
In physics, a property possessed by one type of quark (very small particles found inside protons and neutrons), called the charm quark. The effects of charm are only seen in experiments with particle accelerators. See elementary particles.
ETYM Latin excitatio: cf. French excitation.
Something that excites; SYN. excitement.
ETYM Latin irritatio: cf. French irritation.
The psychological state of being irritated or annoyed; SYN. annoyance, vexation.
ETYM Cf. French stimulant.
A drug that temporarily quickens some vital process.
ETYM Latin, for stigmulus, akin to Latin instigare to stimulate. Related to Instigare, Stick.
Any agency, such as noise, light, heat, or pressure, that can be detected by an organism's receptors.
(Irregular plural: stimuli).
1. A goad; hence, something that rouses the mind or spirits; an incentive.
2. That which excites or produces a temporary increase of action, especially any substance or agent capable of evoking the activity of a nerve or irritable muscle.
Something that thrills
1. (Informal) Something causing excitement or stimulating interest.
2. Something that pleases you and causes you to gain interest in something or someone is a turn-on. Something about a person of the opposite sex that causes you to become sexually or romantically interested in that person is a turn-on. A turnoff is the opposite of a turn-on.