unicameral alphabet
Definition - An alphabet with just one set of letters.

Example -
Hebrew is unicameral because it only has one set of letters, whereas English is bicameral because it has two, upper- and lower-case.

The unicameral Hebrew alphabet
The unicameral Hebrew alphabet

Etymology -
The word derives from the Latin uni, the combining form of the Latin unus, one + camera, vaulted room. Note that the word originally denoted single-chambered legislatures.

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