Strong's #5154: tritos (pronounced tree'-tos)
 ordinal from 5140; third; neuter (as noun) a third part, or (as adverb) a (or the) third time, thirdly:--third(-ly).
Thayer's Greek Lexicon:
 ́ 
 
  tritos 
 
 1) the third
 
  Part of Speech: adjective
Relation: ordinal from G5140
  Citing in TDNT: 8:216, 1188
 
Usage:
This word is used 57 times:
Matthew 16:21: "and be raised again the  third day."
Matthew 17:23: "him, and the  third day he shall be raised again. And they were exceeding sorry."
Matthew 20:3: "he went out about the  third hour, and saw others standing"
Matthew 20:19: "to crucify him: and the  third day he shall rise again."
Matthew 22:26: "also, and the  third, unto the seventh."
Matthew 26:44: "again, and prayed the  third time, saying the same words."
Matthew 27:64: "be made sure until the  third day, lest his disciples"
Mark 9:31: "after that he is killed, he shall rise the  third day."
Mark 10:34: "him: and the  third day he shall rise again."
Mark 12:21: "any seed: and the  third likewise."
Mark 14:41: "And he cometh the  third time, and saith unto them, Sleep on"
Mark 15:25: "And it was  the third hour, and they crucified him."
Luke 9:22: "and be raised the  third day."
Luke 12:38: "come in the  third watch, and find them so,"
Luke 13:32: "tomorrow, and the  third day I shall be perfected."
Luke 18:33: "him, and put him to death: and the  third day he shall rise again."
Luke 20:12: "And again he sent  a third: and they wounded him"
Luke 20:31: "And the  third took her; and in like manner the"
Luke 23:22: "said unto them  the third time, Why, what evil hath he"
Luke 24:7: "be crucified, and the  third day rise again."
Luke 24:21: "this, today is the  third day since"
Luke 24:46: "from the dead the  third day:"
John 2:1: "And the  third day there was a marriage in Cana"
John 21:14: "This is now  the third time that Jesus showed himself to his disciples, after that he was risen"
John 21:17: "He saith unto him the  third time, Simon, son of Jona, lovest thou me?"
John 21:17: "he said unto him the  third time, Lovest thou me? And he said"
Acts 2:15: "suppose, seeing it is  but the third hour of the day."
Acts 10:40: "God raised up the  third day, and showed him openly;"
Acts 23:23: "spearmen two hundred, at  the third hour of the night;"
Acts 27:19: "And the  third day we cast out with our own hands the tackling of the"
1 Corinthians 12:28: "first apostles, secondarily prophets,  thirdly teachers, after that miracles,"
1 Corinthians 15:4: "that he rose again the  third day according to the Scriptures:"
2 Corinthians 12:2: "God knoweth;) such a one caught up to  the third heaven."
2 Corinthians 12:14: "Behold,  the third time I am ready to come to you; and"
2 Corinthians 13:1: "This  is the third time I am coming to you. In the mouth of two"
Revelation 4:7: "a calf, and the  third beast had a face as"
Revelation 6:5: "when he had opened the  third seal, I heard the third"
Revelation 6:5: "seal, I heard the  third beast say, Come and"
Revelation 8:7: "earth: and the  third part of trees was burnt up, and all"
Revelation 8:8: "sea: and the  third part of the sea became blood;"
Revelation 8:9: "And the  third part of the creatures which were in the"
Revelation 8:9: "died; and the  third part of the ships were destroyed."
Revelation 8:10: "And the  third angel sounded, and there fell a great"
Revelation 8:10: "it fell upon the  third part of the rivers, and upon"
Revelation 8:11: "Wormwood: and the  third part of the waters became wormwood;"
Revelation 8:12: "sounded, and the  third part of the sun was smitten, and"
Revelation 8:12: "was smitten, and the  third part of the moon, and the"
Revelation 8:12: "moon, and the  third part of the stars; so as the"
Revelation 8:12: "stars; so as the  third part of them was darkened, and the"
Revelation 8:12: "day shone not  for a third part of it, and the night"