Where does “cospectral” come from?

cospectral (English) comes from English co, from English company, from Middle English companye, from Old French compaignie, from Old French compain, from Latin compāniō, from Latin com-, from Latin con- — resin, gum; to say, speak.

cospectral (English): isospectral

Definitions

  1. isospectral

Ancestry of “cospectral”, step by step

cospectral traces back through two separate lines of ancestry.

via English co

StepLanguageWordMeaning
1EnglishcoClipping of company; they; them
2EnglishcompanyA team; a group of people who work together...
3Middle EnglishcompanyeA company, band, small group, or team of people;...
4Old Frenchcompaigniecompanionship
5Old FrenchcompainAlternative form of compaing; friend; companion
6Latincompāniōcomrade
7Latincom-allomorph of con-
8Latincon-Used in compounds to indicate a being or bringing...
9Latincumwith, along with; at; -fold
10Old LatincomAlternative form of cum
11Proto-Italickomwith, along, at
12Proto-Indo-Europeanḱómbeside, near, by, with
13Proto-Indo-EuropeanḱeDeictic particle, here; Post-positional...
14Middle Englishkyt
15Germankittputty certain kinds of cement used for fixing e.g. window panes
16Old High Germankuti
17Proto-West Germanickwidugum, resin
18Proto-Germanickweduzresin
19Proto-Indo-Europeangʷet-resin, gum; to say, speak

via English spectral

StepLanguageWordMeaning
1EnglishspectralOf, or pertaining to, spectres; ghostly; Of, or...
2EnglishspectreBritain standard spelling of specter
3Frenchspectreghost, specter; spectrum
4Latinspectrumappearance, image; apparition, specter
5Ancient GreekσκοπέωI look, look at, behold; I examine, inspect; 413...
6Ancient Greekσκοπόςwatcher, lookout; protector, guardian; spy, scout
7Ancient GreekσκέπτομαιI look at, examine; I examine, consider, think
8Proto-Hellenicsképťomaito look at
9Proto-Indo-Europeanspéḱyetito be looking at, to keep looking at
10Proto-Indo-Europeanspeḱ-to see, to look, to observe
Every word from Proto-Indo-European gʷet-Every word from Proto-Germanic kweduzEvery word from Proto-West Germanic kwidu
cospectral — Etymology, Origin & Word History | Etymology Explorer