Etymology

hx

H4X8

Today it means: (of an airline) to have an airline booking cancelled by the airline. Full definition →

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Hx · noun1

Formed by analogy with Rx, variant of ℞ (“prescription”), abbreviation of Latin recipe (“take”). Compare also Dx (“diagnosis”).

HX · verb2

From the GDS code that shows on the booking against the affected segment.

Etymology from Wiktionary, CC BY-SA 4.0.