Where does “optical trackpad” come from?

optical trackpad (English) comes from English trackpad, from English track, from Middle English trak, from Old French trac, from Middle Dutch treck, from Old Dutch trecken, from Proto-West Germanic *trakkjan, from Proto-Germanic trakjaną — he, she.

optical trackpad (English): An input device consisting of a small surface with an optical sensor, integrated for some smartphones and subnotebooks

Definitions

  1. An input device consisting of a small surface with an optical sensor, integrated for some smartphones and subnotebooks

Ancestry of “optical trackpad”, step by step

optical trackpad traces back through two separate lines of ancestry.

via English trackpad

StepLanguageWordMeaning
1Englishtrackpadtouchpad
2EnglishtrackA mark left by something that has passed along; A...
3Middle Englishtrak
4Old Frenchtractrack of horses, trail, trace; track; a track,...
5Middle Dutchtreck
6Old Dutchtrecken
7Proto-West Germanic*trakkjanto drag
8Proto-Germanictrakjanąto drag
9Proto-Germanic-janąDerives denominatives from nouns and factitives...
10Proto-Indo-European-yétiCreates intransitive, often deponent,...
11Proto-Indo-Europeanyé-
12Chichewaiyehe, she

via English optical

StepLanguageWordMeaning
1EnglishopticalOf, or relating to sight; visual; Designed to...
2English-álOf or pertaining to. Adjectival suffix appended to various words, often nouns, to produce an adjective form. Often added to words of Latin origin, but used with other words also
3EnglishaldehydeAny of a large class of reactive organic...
4GermanAldehydaldehyde
5Latinalcoholkohl, collyrium, stibium; any other powder...
6Andalusian Arabicكُحُول
7Arabicكحلantimony; kohl, stibnite; black coloring of the...
8Arabicكُحْلantimony; kohl, stibnite
9Akkadianguḫlumkohl, antimony paste
Every word from Chichewa iye