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

(271) And, indeed We have sent Messengers before you (O Muhammad صلى الله عليه وسلم): of some of them We have related to you their story. And of some We have not related to you their story, and it was not given to any Messenger that he should bring a sign except by the Leave of Allah. But, when comes the Commandment of Allah, the matter will be decided with truth, and the followers of falsehood will then be lost.

(272) And He shows you His Ayat (signs and proofs) (of His Oneness in all the above-mentioned things). Which, then of the Ayat (signs and proofs) of Allah do you deny?

(273) And We have assigned for them (devils) intimate companions (in this world), who have made fair-seeming to them, what was before them (evil deeds which they were doing in the present worldly life and disbelief in the Reckoning and the Resurrection) and what was behind them (denial of the matters in the coming life of the Hereafter as regards punishment or reward). And the Word (i.e. the torment) is justified against them as it was justified against those who were among the previous generations of jinn and men that had passed away before them. Indeed they (all) were the losers.

(274) That is the recompense of the enemies of Allah: the Fire. Therein will be for them the eternal home, a (deserving) recompense for that they used to deny Our Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.).

(275) And from among His signs are the night and the day, and the sun and the moon. Prostrate yourselves not to the sun nor to the moon, but prostrate yourselves to Allah Who created them, if you (really) worship Him.

(276) And among His signs (in this), that you see the earth barren; but when We send down water (rain) to it, it is stirred to life and growth (of vegetations). Verily, He Who gives it life, surely, is Able to give life to the dead (on the Day of Resurrection). Indeed He is Able to do all things.

(277) Verily, those who turn away from Our Ayat (proofs, evidence, verses, lessons, signs, revelations, etc. by attacking, distorting and denying them) are not hidden from Us. Is he who is cast into the Fire better or he who comes secure on the Day of Resurrection? Do what you will. Verily He is All-Seer of what you do (this is a severe threat to the disbelievers ).

(278) We will show them Our signs in the universe, and in their own selves, until it becomes manifest to them that this (the Qur'an) is the truth. Is it not sufficient in regard to your Lord that He is a Witness over all things?

(279) And among His Ayat (proofs, evidence, lessons, signs, etc.) is the creation of the heavens and the earth, and whatever moving (living) creatures He has dispersed in them both. And He is All-Potent over their assembling (i.e. resurrecting them on the Day of Resurrection after their death, and dispersion of their bodies) whenever He wills.

(280) And among His signs are the ships in the sea like mountains.