compensatory lengthening
n//kɒmpɛnˈseɪtəɹi ˈlɛŋ(k)θ(ə)nɪŋ//ersättningsförlängning
(phonology, uncountable) The lengthening of a vowel sound which occurs when a following consonant is lost, regarded as an extreme form of fusion; (countable) an instance of this.