Where does “critical altitude” come from?

critical altitude (English) comes from English critical, from English -ál, from English aldehyde, from German Aldehyd, from Latin alcohol, from Andalusian Arabic كُحُول, from Arabic كحل, from Arabic كُحْل — kohl, antimony paste.

critical altitude (English): the altitude at which atmospheric pressure...

Definitions

  1. the altitude at which atmospheric pressure...

Ancestry of “critical altitude”, step by step

critical altitude traces back through two separate lines of ancestry.

via English critical

StepLanguageWordMeaning
1EnglishcriticalInclined to find fault or criticize; Pertaining...
2English-álOf or pertaining to. Adjectival suffix appended to various words, often nouns, to produce an adjective form. Often added to words of Latin origin, but used with other words also
3EnglishaldehydeAny of a large class of reactive organic...
4GermanAldehydaldehyde
5Latinalcoholkohl, collyrium, stibium; any other powder...
6Andalusian Arabicكُحُول
7Arabicكحلantimony; kohl, stibnite; black coloring of the...
8Arabicكُحْلantimony; kohl, stibnite
9Akkadianguḫlumkohl, antimony paste

via English altitude

StepLanguageWordMeaning
1EnglishaltitudeThe absolute height of a location, usually...
2Latinaltitūdōheight (distance from bottom to top)
3Latinaltushigh, tall; deep; profound
4Proto-Italicaltos
5Proto-Indo-Europeanh₂eltós
6Proto-Indo-Europeanh₂él-to grow, nourish
Every word from Akkadian guḫlumEvery word from English -álEvery word from Arabic كُحْل
critical altitude — Etymology, Origin & Word History | Etymology Explorer