Andrey (azangru) wrote,
Andrey
azangru

There is, in electronics, a word perveance, with an essentially unknown etymology. The Wikipedia article says, "probably created from Latin pervenio — to attain", without any references supporting the claim. Lexico.com, channeling some British dictionary or other, suggests, "Origin
1920s. Perhaps from perv- + -eance, or perhaps from pervi- + -ance, after conductance, permittance, etc., with spelling in -eance after words such as permeance". The oldest sources on Google Books, from 1930s or 40s, say that "Perveance is a fundamental tube constant inversely proportional to the impedance".

It does sound suspiciously close to permeance — so close that it makes me wonder whether some physicist or other made a mistake when coining a name for this quantity — but it is impossible to tease out of Google who that physicist was.

(There is, of course, a line from Chaucer with a word spelled as perveance; but this must be a spelling variant of purveyance or something.)
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