Where does “proconcave” come from?

proconcave (English) comes from English concave, from Old French concave, from Latin concavus, from Latin com-, from Latin con-, from Latin cum, from Old Latin com, from Proto-Italic kom — to bend; curve; arch; vault; to bow, bend, arch,...

proconcave (English): In reference to ribs on shells, with the shape of a concave bend towards the aperture, but initially straight

Definitions

  1. In reference to ribs on shells, with the shape of a concave bend towards the aperture, but initially straight

Ancestry of “proconcave”, step by step

proconcave traces back through two separate lines of ancestry.

via English concave

StepLanguageWordMeaning
1Englishconcavecurved like the inner surface of a sphere or...
2Old Frenchconcave
3Latinconcavusconcave, hollow; vaulted, arched
4Latincom-allomorph of con-
5Latincon-Used in compounds to indicate a being or bringing...
6Latincumwith, along with; at; -fold
7Old LatincomAlternative form of cum
8Proto-Italickomwith, along, at
9Proto-Indo-Europeanḱómbeside, near, by, with
10Proto-Indo-EuropeanḱeDeictic particle, here; Post-positional...
11Middle Englishkyt
12Germankittputty certain kinds of cement used for fixing e.g. window panes
13Old High Germankuti
14Proto-West Germanickwidugum, resin
15Proto-Germanickweduzresin
16Proto-Indo-Europeangʷet-resin, gum; to say, speak
17Proto-Indo-Europeangū-to bend; curve; arch; vault; to bow, bend, arch,...

via English pro

StepLanguageWordMeaning
1EnglishproAn advantage of something, especially when...
2EnglishprofessionalA person who belongs to a profession; A person...
3EnglishprofessionA declaration of belief, faith or one's opinion,...
4Anglo-Normanprofessioun
5Old Frenchprofessionprofession; declaration
6Latinprofessiōdeclaration, avowal, profession (act of professing)
7Latin-tiōtion, -ation, -ing
8Latindissertātiō(spoken) dissertation, discourse, disquisition
9Latindissertusarranged, disposed; explained
10Latindissereresecond-person singular future passive indicative...
11Latindis-asunder, apart, in two; reversal, removal;...
12Latincalceusshoe
13Latincalxlimestone; chalk; the finish line
14Ancient Greekχάλιξsmall stone, pebble; gravel, rubble
Every word from Proto-Indo-European gū-