What does LS stand for? The answer changes with the setting. On school paperwork, LS most often means Lower School, Learning Support or Life Science. Car fans use LS for a well known family of V8 engines, and on a computer, ls is the command that lists the files in a folder.
Because the letters are so short, they carry many meanings. The surrounding words, such as a grade level, a part number or a command line, almost always point to the right one.
Quick facts
Common meanings
Lower School; Learning Support; Life ScienceIn engines
A V8 engine family, often called the LS seriesIn computing
ls, the command to list filesOn legal papers
L.S., Latin for place of the sealType
Initialism, said letter by letterCapitals
LS in most uses; lowercase ls for the command
What does LS stand for in school?
School is where most people meet the letters. These are the meanings you are most likely to see, ranked by how often they come up:
- Lower School. Many private and independent schools split students into a Lower School (about kindergarten to grade 4 or 5), a Middle School and an Upper School. "LS Spring Concert" means the event for the youngest students.
- Learning Support. Some districts and schools use this name for help given to students with learning differences, such as small group reading or extra time on tests. It may connect to a formal IEP.
- Life Science. A middle school science course on living things: cells, plants, animals and the human body. A schedule might read "LS 7" for seventh grade life science.
- Liberal Studies. A college major that combines several subjects. It is a common path for future elementary teachers.
School newsletter: "LS pickup moves to the north lot on Friday." In a school with Lower, Middle and Upper divisions, this means parents of younger children should use the north lot.
For more letters on report cards and handouts, check our school acronyms list.
What does LS stand for in engines?
In the car world, LS refers to a family of V8 engines introduced by a large American carmaker in the late 1990s and used in sports cars, pickup trucks and SUVs. Models in the family carry names like LS1, LS3 and LS7.
The letters work as a factory engine code. They are not an official short form for a phrase, even though people sometimes guess at words to fit them. The engines became famous with hot rod builders because they are compact, strong and easy to find, which led to the term "LS swap," meaning putting one of these engines into a different car.
Separately, LS has appeared as a trim level on some cars, a badge that marks a step in features. Fans often say it means "luxury sport," but that is a popular guess rather than an official meaning.
ls in computing
On Unix style computer systems, ls is short for list. Type it in a terminal and it shows the files and folders in the current directory. Common options include ls -l for a detailed list and ls -a to include hidden files.
Here the letters are always lowercase, because commands are case sensitive. Writing LS in capitals would not work on most systems.
Other meanings of LS by field
| Field | Stands for | Example |
|---|---|---|
| Legal documents | Locus sigilli (L.S.), place of the seal | Printed next to a signature line on deeds and contracts |
| Medicine | Lumbosacral | "LS spine x ray" means the lower back |
| Libraries | Library Science | Part of degree names for librarians |
| Sports and fitness | Long sleeve | "LS tee" on a team order form |
On a deed or a will, the small "L.S." beside the signature line comes from Latin. It marks the spot where a wax seal once went, and today the signature itself takes its place.
How to tell which LS is meant
- Grade levels or campus names nearby: Lower School.
- Words like accommodations, services or specialist: Learning Support.
- A course code or science unit: Life Science.
- Horsepower, swaps or numbers like LS3: the V8 engine family.
- A command prompt: the list command.
- A signature line: the Latin seal marking.
Since people always spell out L and S separately, the term is an initialism. For the fine print on that label, read acronym vs abbreviation, which uses many two letter cases.
Questions people ask
What does LS mean in a private school?
It usually means Lower School, the division for the youngest students. The other divisions are often called Middle School (MS) and Upper School (US).
What does LS stand for in engines?
LS is the name of a family of V8 engines from a large American carmaker, first used in the late 1990s. The letters are a factory code rather than a phrase.
What does ls do on a computer?
The ls command lists the files and folders in a directory on Unix style systems. It is short for list.
What does L.S. mean on a contract?
L.S. stands for locus sigilli, Latin for place of the seal. It marks where a seal would go, and your signature there is enough today.
What does LS mean on a science schedule?
It usually means Life Science, the study of living things. It is often taught in middle school.