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

(281) If He wills, He causes the wind to cease, then they would become motionless on the back (of the sea). Verily, in this are signs for everyone patient and grateful.

(282) And those who dispute (polytheists with Our Messenger Muhammad صلى الله عليه و سلم) as regards Our Ayat (proofs, signs, verses, etc. of Islamic Monotheism) may know that there is no place of refuge for them (from Allah's punishment) [Tafsir At-Tabari].

(283) Yet, they assign to some of His slaves a share with Him (by pretending that He has children, and considering them as equals or co-partners in worship with Him). Verily, man is indeed a manifest ingrate!

(284) And indeed We did send Musa (Moses) with Our Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) to Fir'aun (Pharaoh) and his chiefs (inviting them to Allah's religion of Islam) He said: "Verily, I am a Messenger of the Lord of the 'Alamin (mankind, jinn and all that exists)."

(285) But when he came to them with Our Ayat (proofs, evidence, verses, lessons, signs, revelations) behold, they laughed at them.

(286) And not an Ayah (sign, etc.) We showed them but it was greater than its fellow , and We seized them with torment, in order that they might turn [from their polytheism to Allah's religion (Islamic Monotheism)].

(287) And he ['Îsa (Jesus), son of Maryam (Mary)] shall be a known sign for (the coming of) the Hour (Day of Resurrection) [i.e. 'Isa's (Jesus) descent on the earth]. Therefore have no doubt concerning it (i.e. the Day of Resurrection). And follow Me (Allah) (i.e. be obedient to Allah and do what He orders you to do, O mankind)! This is the Straight Path (of Islamic Monotheism, leading to Allah and to His Paradise).

(288) (You) who believed in Our Ayat (proofs, verses, lessons, signs, revelations, etc.) and were Muslims (i.e. who submit totally to Allah's Will, and believe in the Oneness of Allah - Islamic Monotheism).

(289) And granted them signs in which there was a plain trial.

(290) Verily, in the heavens and the earth are signs for the believers.