Where does “equiconcave” come from?

equiconcave (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,...

equiconcave (English): Having surfaces with the same concave radius of curvature

Definitions

  1. Having surfaces with the same concave radius of curvature

Ancestry of “equiconcave”, step by step

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,...
Every word from Proto-Indo-European gū- →Every word from Proto-Indo-European gʷet- →Every word from Proto-Germanic kweduz →