Meaning

noun a variable quantity that can be resolved into components

noun a straight line segment whose length is magnitude and whose orientation in space is direction

noun any agent (person or animal or microorganism) that carries and transmits a disease

originEtymology tree Proto-Indo-European *weǵʰ- Proto-Indo-European *wéǵʰeti Proto-Italic *weɣō Latin vehō Proto-Indo-European *-tōr Proto-Italic *-tōr Latin -tor Latin vectorlbor. English vector Learned borrowing from Latin vector (“carrier, transporter”), from vehō (“to carry, transport, bear”), also ultimately the root of English vehicle. The “person or entity that passes along an urban legend or…

Etymology from Wiktionary, CC BY-SA 3.0