ultraminiature

[ uhl-truh-min-ee-uh-cher, -choo r, -min-uh-cher ]
/ ˌʌl trəˈmɪn i ə tʃər, -ˌtʃʊər, -ˈmɪn ə tʃər /

adjective

Origin of ultraminiature

First recorded in 1940–45; ultra- + miniature
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019