[ sem-ee-duhb-uh l, sem-ahy- ]
/ ˌsɛm iˈdʌb əl, ˌsɛm aɪ- /
having more petals than those of a single flower but fewer than those of a double flower.
Origin of semidouble
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019