From BiblePortal Wikipedia

Hastings' Dictionary of the Bible [1]

Dioscorinthius . See Time.

Cyclopedia of Biblical, Theological and Ecclesiastical Literature [2]

( Διοσκορίνθιος , Vulg. Dioscorus) occurs in  2 Maccabees 11:21, as the name of a Graeco-Seleucid month. Inasmuch as Dius ( Δῖος ) is the name of a well-known Macedonian month (the first of the year), which Josephus ( Ant. 1:3, 3) says corresponds with the Jewish Miarchesvan, the name has been regarded (see Wernsdorf, Defide Maccab . page 32) as a corruption (through the form Διόσκουρος ) for that month (Scaliger, Emend. Temp. 2:94), and by others as an intercalary month (but see Ideler, Chronolog. 1:399). (See Month).

International Standard Bible Encyclopedia [3]

dı̄ - os - kō̇ - rin´thi - us  : A certain (unidentified) month (2 Macc 11:21). See Calendar; Time .