lead - link
- legislative log
- legitimate user
- legs (to have)
- Lehigh restraint test
- Lehigh slow-bend test
- LEI
- LEIS
- LEIT
- Leith-Upatnieks hologram
- Leitz comparator
- LEL
- lemniscate linkage roof supports
- lemniscate linkage shield support
- lemon bearing
- length net
- length of a path
- length of a string
- length of a stroke
- length of bubbling path
- length of cut
- length of employment
- length of exposure
- length of external path
- length of ground
- length of internal path
- length of oblique approachment
- length of parallelism
- length of regular expression
- length of sawing
- length of time required to complete the assignment
- length of time worked (in the industry or occupation)
- length of twist
- length packing plant
- length ratio
- length stop
- length tolerance
- length transfer measurement
- length travel
- length-angle triangulation
- length-increasing grammar
