ALS

See also: ALs, Als, als, åls, al's, and -āls

English

ALS

ALS (countable and uncountable, plural ALSs or ALSes)

(pathology, uncountable) Initialism of amyotrophic lateral sclerosis.
- 2025 April 10, Dan Heching, “Eric Dane shares that he has been diagnosed with ALS”, in CNN‎^[1]:
  ALS is a progressive, neurodegenerative disease affecting the nerve cells in the brain and spinal cord that make the muscles of both the upper and lower body work, according to the ALS Association, a non-profit organization which works to research the disease and offer resources to people living with it.
(aviation, countable) Initialism of approach lighting system.
(electronics, countable) Initialism of ambient light sensor.
- 2017 May 3, Rob Mark, “How It Works: Runway Visual Range”, in Flying‎^[2]:
  Another RVR element, the ambient light sensor (ALS), is used to interpret the impact that background lighting, such as nearby runway lights, might have on the overall visibility measurement. Normally two ALSs are installed in central locations relative to the airfield environment.

(pathology):

(aviation):

amyotrophic lateral sclerosis

Dutch Wikipedia has an article on:

Amyotrofische laterale sclerose

Wikipedia ^nl

ALS