LR or Lr may refer to:
In computer science, LR parsers are a type of bottom-up parsers that efficiently handle deterministic context-free languages in guaranteed linear time.
The LRC (a bilingual acronym: in English: Light, Rapid, Comfortable; in French: Léger, Rapide, et Confortable) is a series of lightweight diesel-powered passenger trains that were used on short- to medium-distance inter-city service in the Canadian Provinces of Ontario and Quebec.
Low density lipoprotein receptor-related protein 1 (LRP1), also known as alpha-2-macroglobulin receptor (A2MR), apolipoprotein E receptor (APOER) or cluster of differentiation 91 (CD91), is a protein forming a receptor found in the plasma membrane of cells involved in receptor-mediated endocytosis.
LRN, founded in 1994, is an American company specializing in advising and educating organizations like the NFL, Dell, Kellogg's and Pfizer about ethics and regulatory compliance, as well as corporate culture, governance and leadership.
LR44 is the IEC designation for an alkaline 1.5 volt button cell, commonly used in small LED flashlights, digital thermometers, calculators, cameras, calipers, watches, clocks, toys, multimeters, and laser pointers.
Low-density lipoprotein receptor-related protein 5 is a protein that in humans is encoded by the LRP5 gene.
LRC (short for LyRiCs) is a computer file format that synchronizes song lyrics with an audio file, such as MP3, Vorbis or MIDI.
Leucine-rich repeat kinase 2 (LRRK2), also known as dardarin (from the Basque word "dardara" which means trembling), is an enzyme that in humans is encoded by the PARK8 gene.
Leucine rich repeat containing 24 is a protein that, in humans, is encoded by the LRRC24 gene. The protein is represented by the official symbol LRRC24, and is alternatively known as LRRC14OS.