✨📕 The NEWThe NEW Collegiate Dictionary, 12th Edition Over 5,000 words added — Buy Now! Collegiate DictionaryBuy Now!

basilar index

noun

: the ratio of the distance between the basion and the alveolar point to the total length of the skull multiplied by 100

Browse Nearby Words

Cite this Entry

“Basilar index.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/basilar%20index. Accessed 5 Dec. 2025.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!