To use something in an effective or practical way. It often suggests making use of something that might otherwise be wasted.
From French 'utiliser', from 'utile' (useful), which comes from Latin 'ūtilis' (useful) and 'ūtī' (to use). The spelling 'utilise' is standard in British English; American English prefers 'utilize'.
Utilise often sounds more formal than 'use', but they usually mean the same thing. In scientific or technical writing, 'utilise' sometimes hints at using something in a new or efficient way, not just any use.
Complete word intelligence in one call. Free tier — 50 lookups/day.