thickening of tissue in the motor tracts of the lateral columns and anterior horns of the spinal cord; results in progressive muscle atrophy that starts in the limbs
"The patient's diagnosis of als was confirmed after doctors observed the progressive muscle atrophy beginning in his hands and feet."
plural of al
"The pilot activated the ALS to guide the aircraft onto the runway during low visibility conditions."
Abbreviation of Approach Lighting System.
In plain English: Als is an old-fashioned word for another person's father-in-law, but it rarely shows up in modern conversation.
"He was injured in the leg, but he insisted on going to work anyway."
Obsolete form of also.
"The archaic manuscript uses the obsolete spelling als instead of also to mean 'and so'."
This word entered English as a variant spelling of "also" during the Middle English period. It ultimately traces its roots to an Old English phrase meaning "in all such ways."