# pellucid

> English word · Adjective · IPA /pɪˈl(j)uːsɪd/

## Definitions
1. Allowing the passage of light; translucent or transparent.
2. Easily understood; clear.
3. Of music or some other sound: not discordant or harsh; clear and pure-sounding.
4. Of a person, their mind, etc.: able to think and understand clearly; not confused; clear, sharp.
5. Easily recognized or seen through; apparent, obvious.

## Etymology
The adjective is a learned borrowing from Latin pellūcidus, perlucidus (“transparent, pellucid; very bright; very understandable”), from per- (prefix meaning ‘through; throughout; completely, thoroughly’) + lūcidus (“clear; full of light, bright, shining; (figuratively) easily understood, clear, lucid”) (from lūceō (“to shine; to become visible, show through; (figuratively) to be apparent, conspicuous, or evident”) (ultimately from Proto-Indo-European *lewk- (“bright; to see; to shine”)) + -idus (suffix meaning ‘tending to’ forming adjectives)).
The noun is derived from the adjective.
Cognates
* Late Latin pellucidum (“transparent substance”)
* Middle French pellucide (modern French pellucide (“pellucid”))

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/pellucid