pellucid

As adjectives the difference between pellucid and opaque

is that pellucid is allowing the passage of light; transparent while opaque is neither reflecting nor emitting light.

As a noun opaque is

(obsolete|poetic) an area of darkness; a place or region with no light.

As a verb opaque is

to make, render (more) opaque.

Pellucid is a related term of unambiguous.

As adjectives the difference between pellucid and unambiguous

is that pellucid is allowing the passage of light; transparent while unambiguous is clear, and having no uncertainty or ambiguity.

As adjectives the difference between euphonious and pellucid

is that euphonious is pleasant-sounding; agreeable to the ear; possessing or demonstrating euphony while pellucid is allowing the passage of light; transparent.

Pellucid is a related term of crystalline.

As adjectives the difference between pellucid and crystalline

is that pellucid is allowing the passage of light; transparent while crystalline is of, relating to, or composed of crystals.

As a noun crystalline is

(obsolete) any crystalline substance.

Pellucid is a related term of vitreous.

As adjectives the difference between pellucid and vitreous

is that pellucid is allowing the passage of light; transparent while vitreous is of or resembling glass; glassy.

As a noun vitreous is

(by elision) the vitreous humor.

As adjectives the difference between pellucid and diaphanous

is that pellucid is allowing the passage of light; transparent while diaphanous is transparent or translucent; allowing light to pass through; capable of being seen through.

As adjectives the difference between pellucid and lucent

is that pellucid is allowing the passage of light; transparent while lucent is emitting light; shining, luminous.

As adjectives the difference between pellucid and subpellucid

is that pellucid is allowing the passage of light; transparent while subpellucid is somewhat pellucid; nearly pellucid.