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.
Effect is mostly commonly used as a noun meaning the result or impact of something, an outcome. If there's a/an/the in front of it, it's an effect. Adding to the confusion, effect can also be used as a verb to mean to produce or to cause to come into being. Here's an example that uses it correctly, A government unable to effect any change is a government that will produce no surprises.