Where does “pseudospectral” come from?

pseudospectral (English) comes from English spectral, from English spectre, from French spectre, from Latin spectrum, from Ancient Greek σκοπέω, from Ancient Greek σκοπός, from Ancient Greek σκέπτομαι, from Proto-Hellenic sképťomai — to see, to look, to observe.

pseudospectral (English): Describing a class of numerical analysis methods...

Definitions

  1. Describing a class of numerical analysis methods...

Ancestry of “pseudospectral”, step by step

pseudospectral traces back through two separate lines of ancestry.

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

via English pseudo

StepLanguageWordMeaning
1EnglishpseudoAn intellectually pretentious person; a...
2Englishpseudo-False, not genuine, fake
3Ancient Greekψευδήςlying, false, untrue; deceived, beguiled
4Ancient Greek-ήςadjective suffix
5Proto-Indo-European-ēsPrimarily forms adjectival bahuvrīhi compounds
6Proto-Indo-European-ess
7Proto-Indo-European-osCreates action nouns or result nouns from verbs;...
Every word from Proto-Indo-European speḱ-