Effect of finite duration occurring rapidly (usually in the first 24 h or up to 14 d) following a single dose or short exposure to a substance or radiation. Note: Acute effects may occur continuously [..]

An adverse effect on a human or animal body, with severe symptoms developing rapidly and coming quickly to a crisis. See also, "Chronic". Importance: How much and how long one is exposed to [..]

An adverse effect on any living organism in which severe symptoms develop rapidly and often subside after the exposure stops.

An adverse effect on a human or animal body, with severe symptoms developing rapidly and coming quickly to a crisis. Examples include dizziness, nausea, skin rashes, and inflammation, tearing of eyes, [..]

Effect of short duration and occurring rapidly (usually in the first 24 h or up to 14 d) following a single dose or short exposure to a substance or radiation

An adverse effect on any living organism in which severe symptoms develop rapidly and often subside after the exposure stops; occurring over a short period of time; used to describe brief exposures and effects which appear promptly after exposure. Also see: Chronic effect