Meaning

noun a useful or valuable quality

noun the arithmetic operation of summing; calculating the sum of two or more numbers

adjective on the positive side or higher end of a scale

originEtymology tree Proto-Indo-European *pleh₁- Proto-Indo-European *-yōs Proto-Indo-European *pléh₁yōs Proto-Italic *plēōs Old Latin plousder. Latin plūsbor. English plus Borrowed from Latin plūs (“more”).

Etymology from Wiktionary, CC BY-SA 3.0