Where does “truth-functional” come from?

truth-functional (English) comes from English function, from Middle French function, from Latin functiō, from Latin -tiō, from Latin dissertātiō, from Latin dissertus, from Latin disserere, from Latin dis- — small stone, pebble; gravel, rubble.

truth-functional (English): Of or relating to a truth function; having a truth value that depends solely on the truth values of its components

Definitions

  1. Of or relating to a truth function; having a truth value that depends solely on the truth values of its components

Ancestry of “truth-functional”, step by step

truth-functional traces back through two separate lines of ancestry.

via English function

StepLanguageWordMeaning
1EnglishfunctionWhat something does or is used for; A...
2Middle Frenchfunctionfunction what something's intended use is
3Latinfunctiōperformance, execution (of a task)
4Latin-tiōtion, -ation, -ing
5Latindissertātiō(spoken) dissertation, discourse, disquisition
6Latindissertusarranged, disposed; explained
7Latindissereresecond-person singular future passive indicative...
8Latindis-asunder, apart, in two; reversal, removal;...
9Latincalceusshoe
10Latincalxlimestone; chalk; the finish line
11Ancient Greekχάλιξsmall stone, pebble; gravel, rubble

via English truth

StepLanguageWordMeaning
1EnglishtruthTrue facts, genuine depiction or statements of...
2Middle Englishtroutetrout certain fish of the genus
3Old Englishtruhttrout
4Old Frenchtruite
5Latintructaa kind of trout
6Ancient Greekτρώκτηςgnawer, nibbler; greedy knave; kind of fish with...
7Ancient Greek-τήςAppended to verbs to form agent nouns
8Ancient Greekπεῖραtrial, experiment, attempt
9Proto-Indo-Europeanper-before, in front; first; to go through
10Proto-Indo-Europeanpr̥tóspassed , crossed
Every word from Ancient Greek χάλιξEvery word from Latin -tiōEvery word from Latin dis-