WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / O / optical instrument optical instrument noun /ɑptɪkəlɪnstrəmənt/ 18 letters Scrabble 23 WWF 30 Definitions noun an instrument designed to aid vision Look “optical instrument” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →