Strong's G3159 · Greek

Μαθθίας

Matthias · mat-thee'-as

apparently a shortened form of 3161; Matthias (i.e. Mattithjah), an Israelite

Scholarly Lexicons

Abbott-Smith Manual Greek Lexicon

 2 (KJV) Μαθθίας (Rec. Ματθ- , v.s. Μαθθαῖος ), -α, ὁ (Heb. מַתִּיָה ), Matthias : Ac 1:23 , 26 .† 

G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain