Added 10 October 2026 caliper /ˈkælɪpɚ/ noun Categories: ThingsRare Words noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about caliper at Wordnik → Where our words come from → An instrument for measuring the distance between two points (often used in the plural). verb Measure the diameter of something with calipers. Origin Variant of caliber. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: callipercallipersflangeclamplatchpincervernierclipgaugingcalibrethicknessprobe Back to today's word