restrictions

Noun

restriction (countable and uncountable, plural restrictions)

1. The act of restricting, or the state of being restricted.
   • A surge of tight restriction emanates from the locale as tense muscles quiver like overtuned violin strings, and the feeling of shifting the kneecap back in place is very similar to cracking a knuckle (and in fact can produce an audible pop, adding a delightful aural component to the mix).2013 June 25, Chris Kluwe, “A Bit of Strained Groin and a Dash of Trick Knee”, in Slate, archived from the original on 14 Apr 2019
2. A regulation or limitation that restricts.
   • In the year 1819, Sir Robert Peel brought in a bill, and which finally passed both houses, and received the royal assent on the 2nd July, for continuing the restrictions contained in several acts of parliament, on payments in cash by the bank of England, until the 1st day of May, 1823, and to...1835, Thomas Stephen, “The Rise, Progress, and Gradual Improvement of the Laws of England”, in The Book of the Constitution of Great Britain: […], Glasgow; Edinburgh: Blackie & Son, […]; Dublin: W....
3. The mechanism by which a cell degrades foreign DNA material.
   • Echinorhagata is likewise supported by typical echinoderid autapomorphies, inclusive the number of trichoscalids that is reduced from 14 to 6; restriction of lateral accessory spines to females only; and an apparent restriction of the middorsal spines to appear only on segments 4 to 8.2015 July 23, “Phylogeny of Kinorhyncha Based on Morphology and Two Molecular Loci”, in PLOS ONE, →DOI