"Semidiaphanous" is a word in ENGLISH

An imperfect or half cadence, falling on the dominant instead of on the key note.

Consisting of some indefinite portion resembling a half; approximately a half, whether more or less; partial; imperfect; as, a half …

In an equal part or degree; in some pa/ appro/mating a half; partially; imperfectly; as, half-colored, half done, half-hearted, half …

Imperfectly acquainted with the rules of good-breeding; not well trained.

Imperfectly hatched; as, half-hatched eggs.

Imperfectly or partly heard to the end.

Imperfectly learned.

Seeing imperfectly; having weak discernment.

Half-bred; imperfect.

In the middle; at half the distance; imperfectly; partially; as, he halfway yielded.

A prefix signifying half, and sometimes partly or imperfectly; as, semiannual, half yearly; semitransparent, imperfectly transparent.

Half compact; imperfectly indurated.

Half conscious; imperfectly conscious.

Half or imperfect transparency; translucency.

A half form; an imperfect form.

Half formed; imperfectly formed; as, semiformed crystals.

Half lenticular or convex; imperfectly resembling a lens.

Half clear, or imperfectly transparent; as, a semipellucid gem.

Half transparent; imperfectly clear; semipellucid.

Half or imperfectly transparent.