intervocalically

As a noun taxonomy

is the science or the technique used to make a classification.

As an adverb intervocalically is

between vowels.

As a noun vowel

is (phonetics) a sound produced by the vocal cords with relatively little restriction of the oral cavity, forming the prominent sound of a syllable.

As an adverb intervocalically is

(phonology) between vowels.

Intervocalically is an antonym of interconsonantally.

As adverbs the difference between intervocalically and interconsonantally

is that intervocalically is (phonology) between vowels while interconsonantally is existing or occurring between consonants.