Where does “tankproof” come from?

tankproof (English) comes from English proof, from Middle English proof, from Old French prove, from Latin proba, from Latin probāre, from Latin probō, from Latin Probus, from Proto-Indo-European pro-bhwo- — passed , crossed.

tankproof (English): Resistant to incursion by tanks

Definitions

  1. Resistant to incursion by tanks

Ancestry of “tankproof”, step by step

tankproof traces back through two separate lines of ancestry.

via English proof

StepLanguageWordMeaning
1EnglishproofAn effort, process, or operation designed to...
2Middle Englishproof
3Old Frenchprove
4Latinprobatest, trial; proof, evidence
5Latinprobāre
6Latinprobōto approve, permit, commend
7LatinProbusgood, serviceable, excellent, superior, able
8Proto-Indo-Europeanpro-bhwo-being in front, prominent
9Proto-Indo-Europeanpro-toward, forward
10Proto-Indo-Europeanpor-to give birth; forward, through; going, passage
11Proto-Indo-Europeanper-before, in front; first; to go through
12Proto-Indo-Europeanpr̥tóspassed , crossed

via English tank

StepLanguageWordMeaning
1EnglishtankA closed container for liquids or gases; An open...
2Portuguesetanquetank; cistern; a sink used for laundry
3Gujaratiટાંકીcistern, underwater water reservour
4Prakrit𑀝𑀁𑀓
5Sanskritटङ्कfruit of {{taxlink|Feronia elephantum|species}};...
Every word from Proto-Indo-European pr̥tós
tankproof — Etymology, Origin & Word History | Etymology Explorer