تک-، یک-، یکتا-، مونو-
tak- (#), yek- (#), yektâ- (#), mono- (#)
1) A combining form meaning "alone, single, one," as in monochromatic,
2) In chemistry applied to compounds containing one atom of a particular element
From Gk. mono-, from monos "single, alone," from PIE base *men-
"small, isolated," also represented by Gk. manos "rare, sparse."
Tak "single, alone", from Mid.Pers. tak "single, alone," maybe related to
tâk, tâi "unit, piece."
Yek "one, alone," from Mid.Pers. êwak (Proto-Iranian *aiua-ka-);
O.Pers. aiva- "one, alone;" Av. aēuua- "one, alone;" cf. Skt.
éka- "one, alone, single; " Gk. oios "alone, lonely;" L. unus "one;"
Ger. ein; E. one.
Yektâ-, from yek, as above, + tâ
"fold, plait, ply; piece, part," also a multiplicative suffix; Mid.Pers.
tâg "piece, part."
Mono-, loan from Gk., as above.