Glossary Term Definition
Having two alphabets or two cases joined in a single system, as with the Latin, Greek, and Cyrillic scripts which combine upper and lower case.
Definition
Having two alphabets or two cases joined in a single system. The Latin, Greek, and Cyrillic scripts are all bicameral. They combine upper case (majuscules) and lower case (minuscules). Most other scripts, including Arabic, Hebrew, Thai, and Tibetan, are unicameral.
Source
No access — Robert Bringhurst — p. 322:
Having two alphabets or two cases joined in a single system.