Strong's #302: an (pronounced an)
 a primary particle, denoting a supposition, wish, possibility or uncertainty:--(what-, where-, wither-, who-)soever. Usually unexpressed except by the subjunctive or potential mood. Also contracted for 1437.
Thayer's Greek Lexicon:
 ̓́ 
 
  an 
 
 1) has no exact English equivalent, see definitions under AV
 
  Part of Speech: particle
Relation: a primary particle
 
Usage:
This word is used 184 times:
1 Corinthians 11:26: "For as often as  ye eat this bread, and drink"
1 Corinthians 11:26: "ye eat this bread, and  drink this cup,"
1 Corinthians 11:27: "Wherefore  whosoever shall eat this bread, and drink"
1 Corinthians 11:34: "And the rest will I set in order  when I come."
1 Corinthians 12:2: "these dumb idols, even as  ye were led."
1 Corinthians 16:2: "lay by him in store,  as God hath prospered him, that"
2 Corinthians 3:16: "Nevertheless  when it shall turn to the Lord, the veil"
2 Corinthians 10:9: "That I may not seem  as if I would terrify you by"
2 Corinthians 11:21: "we had been weak. Howbeit  whereinsoever any is bold, I"
Galatians 1:10: "pleased men, I should not  be the servant of Christ."
Galatians 3:21: "there had been a law given which could have given life,  verily righteousness should have been"
Galatians 4:15: "I bear you record, that, if it had been possible,  ye would have plucked out your own eyes,"
Galatians 5:10: "but he that troubleth you shall bear his judgment,  whosoever he be."
Galatians 5:17: "ye cannot do the things  that ye would."
Philippians 2:23: "to send presently, so soon as  I shall see how it will go with me."
Colossians 3:17: "And  whatsoever ye do in word or deed,"
1 Thessalonians 2:7: "gentle among you,  even as a nurse cherisheth"
Hebrews 1:13: "on my right hand,  until I make thine enemies"
Hebrews 4:8: "Joshua had given them rest, then would he not  afterward have spoken"
Hebrews 8:4: "on earth, he should not  be a priest, seeing that there are priests"
Hebrews 8:7: "covenant had been faultless, then should no  place have been sought for the second."
Hebrews 10:2: "For then would they not  have ceased to be offered? because that the worshipers once"
Hebrews 11:15: "country from whence they came out,  they might have had opportunity to have returned."
James 3:4: "with a very small helm,  whithersoever the governor"
James 4:4: "is enmity with God?  whosoever therefore will be"
James 5:7: "hath long patience for it,  until he receive the early and"
1 John 2:5: "But  whoso keepeth his word, in him"
1 John 2:19: "they had been of us,  they would no doubt have continued with us: but"
1 John 3:17: "But  whoso hath this world's good, and seeth"
1 John 4:15: " Whosoever shall confess that Jesus is the Son"
1 John 5:15: "that he hear us,  whatsoever we ask, we know that"
Revelation 2:25: "ye have already hold fast till  I come."
Revelation 13:15: "should both speak, and cause  that as many as would not worship"
Revelation 14:4: "they which follow the Lamb  whithersoever he goeth. These were redeemed"