We found 4 dictionaries that define the word semiarch:

General (4 matching dictionaries)

1. semiarch: Merriam-Webster
2. semiarch: Infoplease Dictionary
3. semiarch: Dictionary.com
4. semiarch: Wiktionary

Definitions from Wiktionary (semiarch) ▸ noun:  Half of an arch. ▸ Words similar to semiarch ▸ Usage examples for semiarch ▸ Idioms related to semiarch ▸ Wikipedia articles (New!) ▸ Popular adjectives describing semiarch ▸ Words that often appear near semiarch ▸ Rhymes of semiarch ▸ Invented words related to semiarch