Tues·day 
(tzdē, -dā′, tyz-)
(tzdē, -dā′, tyz-)n. Abbr. Tues. or Tue. or Tu or T
The day of the week that comes after Monday and before Wednesday.
[Middle English Tuesdai, from Old English Tīwesdæg, Tiu's day : Tīwes, genitive of Tīw, Tiu; see TIU + dæg, day (translation of Latin diēs Mārtis, Mars' day).]