opeidoscope

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. An [[instrument]], consisting of a [[tube]] with one end open and the other end covered with a thin flexible [[membrane]] with a [[mirror]] attached to its centre, used for [[exhibit]]ing upon a [[screen]], by means of rays reflected from the mirror, the [[vibratory]] motions caused by [[sound]]s that enter the tube.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.