(of an image) Sharp and clear with no fuzziness. / (idiomatic, of one's thoughts) Clearly perceived.

(countable, optics) A point at which reflected or refracted rays of light converge. / (countable, geometry) A point of a conic at which rays reflected from a curve or surface converge.

(intransitive, followed by on or upon) To concentrate during a task. / (transitive) To direct attention, effort, or energy to a particular audience or task.

present participle of focus-group

To subject ideas to review by a focus group in order to determine the viability of those ideas.

plural of focus group

simple past tense and past participle of focus-group

Third-person singular simple present indicative form of focus-group

Alternative spelling of focus group

plural of focus-group (alternative spelling of focus groups).