Where does “underdilation” come from?

underdilation (English) comes from English dilation, from English dilate, from Middle English dilaten, from Old French dilater, from Latin dīlātō, from Latin differō, from Latin dis-, from Latin calceus — small stone, pebble; gravel, rubble.

underdilation (English): Less than normal dilation

Definitions

  1. Less than normal dilation

Ancestry of “underdilation”, step by step

underdilation traces back through two separate lines of ancestry.

via English dilation

StepLanguageWordMeaning
1EnglishdilationThe act of dilating; State of being dilated;...
2EnglishdilateTo enlarge; to make bigger; To become wider or...
3Middle Englishdilaten
4Old Frenchdilater
5Latindīlātōto spread out, extend, dilate
6Latindifferōto carry different ways, spread, scatter, disperse, separate
7Latindis-asunder, apart, in two; reversal, removal;...
8Latincalceusshoe
9Latincalxlimestone; chalk; the finish line
10Ancient Greekχάλιξsmall stone, pebble; gravel, rubble

via English under

StepLanguageWordMeaning
1EnglishunderIn or at a lower level than; As a subject of;...
2Middle Englishunderunder
3Old Englishunderunder, beneath
4Proto-Germanicunderamong, between; under, beneath; under
5Proto-Indo-Europeanh₁entérbetween
6Proto-Indo-Europeanh₁enin; in, inside
Every word from Ancient Greek χάλιξ