ILS

ILS

1. (international standards) ISO 4217 currency code for the Israeli new shekel.

   Synonym: NIS (unofficial)

ILS

1. (classics) Initialism of Inscriptiones Latinae Selectae.

ILS (countable and uncountable, plural ILSs)

1. (aviation) Initialism of instrument landing system.
2. Initialism of integrated logistic support.
3. Initialism of integrated library system.
4. (derogatory, humorous) Initialism of imaginary lat syndrome / invisible lat syndrome.
   • 1993 January 11, Aleck H Alexopoulos, “Vanadyl Sulphate: An experiment”, in misc.fitness‎^[1] (Usenet), archived from the original on 15 July 2025:

     A week has gone by and i^[sic] still like a skinny guy wearing a Powerhouse gym sweatshirt suffering from acute ILS (Invisible Lat Syndrome....).

   • 2001, Lee F. Monaghan, Bodybuilding, Drugs and Risk, London, New York, N.Y.: Routledge, →ISBN, page 42:

     Neophytes, for example, risk being ridiculed by other gym members if they walk this way: ‘Aghh, look at him! He’s got ILS [Imaginary Lat Syndrome]’.

   • 2002, Ray Burton, “That Which Doesn’t Bend, Breaks!”, in Branda Moen, editor, Fat to Fit: Your Complete Guide to Losing Weight and Getting Fit, Canada: buildingbodies, →ISBN, “The Basics of Working Out and Your First Routine” section, page 41:

     Weight lifting is awesome when done properly. However, doing a limited range of movement (chopping your reps short of full extension) over a prolonged period of time can create shortened muscles. This is commonly seen with “ILS” and “MAS”. The “Invisible Lat Syndrome” and “Monkey Arm Syndrome” are where the person walks around like they are carrying a beer keg under each arm.

   • 2011, Jayson Krause, “Stranger 12”, in 52 People: Connecting with Life Through Strangers, [Okotoks, Alta.]: Driven By Passion Press, →ISBN, page 58:

     You see, I have always been a short, stocky, muscle bound guy. Hours upon hours in the weight room have contributed to stiff rigid movements, limited flexibility, and extended suffering of the condition of ILS (Invisible Lat Syndrome – walking with my arms out wide to make me look bigger).

   • 2017, Andrew Ginsburg, Pumping Irony: How to Build Muscle, Lose Weight, and Have the Last Laugh, Skyhorse Publishing, →ISBN:

     ILS, or Imaginary Lat Syndrome, became popular in the late 1980s when pro wrestling peaked and every guy wanted to be like Hulk Hogan.

   • 2018 April 26, Tim Kirkpatrick, “5 of the stupidest diseases you can develop at the gym”, in We Are The Mighty‎^[2], Palo Alto, Calif.: Mighty Networks, archived from the original on 27 April 2018:

     1. ILS, or Invisible Lat Syndrome / This severe ailment is considered by many to be one of the worst physical deformities of all time. If you've ever seen an average guy walk around the gym looking like he's got invisible braces holding up his arms, then you're probably witnessing a terrible case of "invisible lat syndrome."

   • 2020 September 30, Sir Gaygory's Owner's Owner 🐶笛, “i have 50 dollars that say that”, in alt.fan.rush-limbaugh‎^[3] (Usenet), archived from the original on 15 July 2025:

     [[title] i have 50 dollars that say that] checkmate has ILS... https://www.wearethemighty.com/diseases-you-develop-at-gym?rebelltitem=4#rebelltitem4

     Referring to the quotation from We Are The Mighty.

(aviation):

• VOR, VORTAC
• ALS
• PAPI
• OLS

(aviation):

• GLS
• IGS
• MLS

• ISL, LIS, LSI, SIL, SLI, Sil, isl., lis, sil