The word(s) "sign" appears 351 time(s) in 320 verse(s) in Quran in Mohsin Khan translation.

(51) And who can be more unjust than he who invents a lie against Allah, or says: "A revelation has come to me" whereas no revelation has come to him in anything ; and who says, "I will reveal the like of what Allah has revealed." And if you could but see when the Zalimun (polytheists and wrong-doers) are in the agonies of death, while the angels are stretching forth their hands (saying): "Deliver your souls! This day you shall be recompensed with the torment of degradation because of what you used to utter against Allah other than the truth. And you used to reject His Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) with disrespect! "

(52) It is He Who has set the stars for you, so that you may guide your course with their help through the darkness of the land and the sea. We have (indeed) explained in detail Our Ayat (proofs, evidence, verses, lessons, signs, Revelations, etc.) for people who know.

(53) It is He Who sends down water (rain) from the sky, and with it We bring forth vegetation of all kinds, and out of it We bring forth green stalks, from which We bring forth thick clustered grain. And out of the date-palm and its spathe come forth clusters of dates hanging low and near, and gardens of grapes, olives and pomegranates, each similar (in kind) yet different (in variety and taste). Look at their fruits when they begin to bear, and the ripeness thereof. Verily! In these things there are signs for people who believe.

(54) And they swear their strongest oaths by Allah, that if there came to them a sign, they would surely believe therein. Say: "signs are but with Allah and what will make you (Muslims) perceive that (even) if it (the sign) came, they will not believe?"

(55) So eat of that (meat) on which Allah's Name has been pronounced (while slaughtering the animal), if you are believers in His Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.).

(56) And when there comes to them a sign (from Allah) they say: "We shall not believe until we receive the like of that which the Messengers of Allah had received." Allah knows best with whom to place His Message. Humiliation and disgrace from Allah and a severe torment will overtake the criminals (polytheists, sinners) for that which they used to plot.

(57) And they assign to Allah a share of the tilth and cattle which He has created, and they say: "This is for Allah according to their claim, and this is for our (Allah's so-called) partners." But the share of their (Allah's so-called) "partners" reaches not Allah, while the share of Allah reaches their (Allah's so-called) "partners"! Evil is the way they judge!

(58) Say: "Bring forward your witnesses, who can testify that Allah has forbidden this. Then if they testify, testify not you (O Muhammad صلى الله عليه وسلم) with them. And you should not follow the vain desires of such as treat Our Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) as falsehoods, and such as believe not in the Hereafter, and they hold others as equal (in worship) with their Lord."

(59) Or lest you (pagan Arabs) should say: "If only the Book had been sent down to us, we would surely have been better guided than they (Jews and Christians)." So now has come unto you a clear proof (the Qur'an) from your Lord, and a guidance and a mercy. Who then does more wrong than one who rejects the Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) of Allah and turns away therefrom? We shall requite those who turn away from Our Ayat with an evil torment, because of their turning away (from them). [Tafsir At-Tabari]

(60) Do they then wait for anything other than that the angels should come to them, or that your Lord (Allah) should come, or that some of the signs of your Lord should come (i.e. portents of the Hour e.g., rising of the sun from the west)! The day that some of the signs of your Lord do come, no good will it do to a person to believe then, if he believed not before, nor earned good (by performing deeds of righteousness) through his Faith. Say: "Wait you! we (too) are waiting."