Urticariaâthe scientific name for hivesâis an outbreak of red, swollen, and itchy welts that form on the skin. Hives appear suddenly and can appear anywhere on the body, including the face, lips and throat. They typically vary in size, and may join together to form larger welts.
Define effectivity. effectivity synonyms, effectivity pronunciation, effectivity translation, English dictionary definition of effectivity. adj. 1. a. Having an intended or expected effect. b. Producing a strong impression or response; striking: gave an effective performance as Othello.
Affective is a word that crops up a lot in psychologyâit means having to do with emotions or moods. Affective disorders are characterized by mood swings. It can be tricky to remember the difference between effective and affective (but easier than distinguishing between effect and affect). Effective makes a judgment about how something worksâan effective strategy is one that works well.