Feeling nervous or terrified, as in When I looked over the cliff, I broke out in a cold sweat. This expression refers to perspiring accompanied by a feeling of cold, which can be induced by acute fear as well as by fever. [ Late 1700s ]
[in-ak-shuh n] /ɪnˈæk ʃən/ noun 1. absence of ; idleness. /ɪnˈækʃən/ noun 1. lack of action; idleness; inertia n. 1707, from in- (1) “not, opposite of” + action.
[in-ak-tuh-veyt] /ɪnˈæk təˌveɪt/ verb (used with object), inactivated, inactivating. 1. to make : The bomb was inactivated. 2. Immunology. to stop the activity of (certain biological substances). /ɪnˈæktɪˌveɪt/ verb 1. (transitive) to render inactive inactivate in·ac·ti·vate (ĭn-āk’tə-vāt’) v. in·ac·ti·vat·ed, in·ac·ti·vat·ing, in·ac·ti·vates in·ac’ti·va’tion n.
- Inactivated poliovirus vaccine
inactivated poliovirus vaccine n. Abbr. IPV See poliovirus vaccine.
- Inactive repressor
inactive repressor in·ac·tive repressor (ĭn-āk’tĭv) n. See aporepressor.