What does "uniliteral" mean?

Consisting of a single letter; single-letter.

Uniliteral

Common synonyms include: one piece, one sided, unicameral, unicellular, unidimensional, unidirectional.

adj

adj ·Rare ·Advanced level

Adjective

1
Consisting of a single letter; single-letter. not-comparable
"uniliteral phonograms"

From uni- + literal.