absorptiv.

absorpsjon + -iv, first part from Latin absorptiō (“drink, beverage”), from absorbeō (“absorb”), from both ab- (“from, away from, off”), from ab (“from, away from, on, in”), from Proto-Italic *ab, from Proto-Indo-European *h₂epó (“off, away”), + and from sorbeō (“to suck in, drink up”), from Proto-Italic *sorβeō (“to suck in”), from Proto-Indo-European *srobʰéyeti (“to be sipping, sucking”), from *srebʰ- (“to sip, gulp, suck (in)”) and *-éyeti, from *-yeti (creates transitive imperfective verbs). Last part from French -if (“-ive”), from Middle French, from Old French, from Latin -īvus, from Proto-Indo-European *-iHwós, from *-wós (creates adjectives from verb stems).