field trial

WordReference Random House Unabridged Dictionary of American English © 2025

field′ tri′al, 

1. Dog and Cat Breeds a competition among sporting dogs under natural conditions in the field, in which the animals are judged on the basis of excellence of performance in hunting.
2. Communications, Business a trial of a new product or procedure to determine its efficiency or usefulness in actual performance.
• 1840–50

Collins Concise English Dictionary © HarperCollins Publishers::

field trial noun

1. (often plural) a test to display performance, efficiency, or durability, as of a vehicle or invention