Opacities

Part of speech: noun

Definitions

1. The quality or state of being opaque, where light cannot pass through
2. Variations in transparency occurring within visual elements, often leading to a lack of clarity
3. Instances or degrees of opaqueness found in materials, causing obscured perception or visibility

Etymology: "Opacities" is simply the plural of "opacity," so the history belongs to the singular. "Opacity" was formed in English from "opaque" plus the suffix "-ity," which turns an adjective into a noun of quality. The adjective itself came into English from French "opaque," which in turn traces back to Latin "opacus," meaning shady or dark. The Latin noun "opacitas" meant shadiness or darkness, and it passed into French as "opacité" before reaching English. The sense has stayed remarkably literal: an opaque object blocks light, and opacity names that blocking quality, whether we are talking about a sheet of paper, a sealed window, or a murky corporate deal described as having little transparency.

Synonyms: cloudiness, haze, blur, obscurity, dimness

Antonyms: clarity, transparency, brightness, clearness, lucidity