and also words for "follow" (cf. L. sequor), but "opinions differ in regard to the semantic starting-point and sequences" [Buck]. Thus see could originally mean "follow with the eyes." Used in M.E. to mean "behold in the imagination or in a dream" (c.1200), "to recognize the force of (a demonstration)," also c.1200, "often with ref. to metaphorical light or eyes" [OED], and "to learn by reading" (1426). Past tense saw developed from O.E. pl. sawon.
"When you have seen one of their Pictures, you have seen all." [Blake, c.1811]
Sense of "escort" (e.g. to see someone home) first recorded 1607 in Shakespeare. Meaning "to receive as a visitor" is attested from c.1500. Gambling sense of "equal a bet" is from 1599. See you as a casual farewell first attested 1891. Seeing Eye dog first attested 1929, Amer.Eng., trademarked by Seeing Eye Inc. of New Jersey.
"position of a bishop," c.1300, from O.Fr. sied, sed, from L. sedem (nom. sedes) "seat, abode," related to sedere "to sit" (see sedentary