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

(131) And they assign daughters unto Allah! - Glorified (and Exalted) is He above all that they associate with Him! And unto themselves what they desire;

(132) They assign to Allah that which they dislike (for themselves), and their tongues assert the falsehood that the better things will be theirs. No doubt for them is the Fire, and they will be the first to be hastened on into it, and left there neglected. (Tafsir Al-Qurtubi)

(133) And Allah sends down water (rain) from the sky, then He revives the earth therewith after its death. Verily, in this is a sign (clear proof) for people who listen (obey Allah).

(134) And from the fruits of date-palms and grapes, you derive strong drink and a goodly provision. Verily, therein is indeed a sign for people who have wisdom.

(135) "Then, eat of all fruits, and follow the ways of your Lord made easy (for you)." There comes forth from their bellies, a drink of varying colour wherein is healing for men. Verily, in this is indeed a sign for people who think.

(136) Do they not see the birds held (flying) in the midst of the sky? None holds them but Allah [none gave them the ability to fly but Allah]. Verily, in this are clear Ayat (proofs and signs) for people who believe (in the Oneness of Allah).

(137) Verily! Those who believe not in the Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) of Allah, Allah will not guide them and theirs will be a painful torment.

(138) It is only those who believe not in the Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) of Allah, who fabricate falsehood, and it is they who are liars.

(139) Glorified (and Exalted) be He (Allah) [above all that (evil) they associate with Him] Who took His slave (Muhammad صلى الله عليه و سلم) for a journey by night from Al-Masjid-al-Haram (at Makkah) to Al-Masjid-al-Aqsa (in Jerusalem), the neighbourhood whereof We have blessed, in order that We might show him (Muhammad صلى الله عليه و سلم) of Our Ayat (proofs, evidence, lessons, signs, etc.). Verily, He is the All-Hearer, the All-Seer .

(140) And We have appointed the night and the day as two Ayat (signs etc.). Then, We have obliterated the sign of the night (with darkness) while We have made the sign of the day illuminating, that you may seek bounty from your Lord, and that you may know the number of the years and the reckoning. And We have explained everything (in detail) with full explanation.