- lit. a hill hidden behind a straw—a big secret hidden under an apparent trifle
- leo the lion
- lion forceps
- lion fish
- lion
- liabilities
- long_living
- long lived
- long living
- lynn fontanne
- lynx
- lit to look for meat in a kite's nest—to seek for something in a quarter where it is bound to be used up
- large angle x ray diffraction
- laredo
- large scale
- large
- lit. enemy of snakes —garuṛ
- lithographic
- linseed
- lenticonus
- libido
- libidinousness
- level of prevention
- leucopterin
- leucorrhea
- leucophyllous
- leukemic xanthomatosis
- leuctra
- leukaemia cutis
- leukaemia cutis universalis
- leucoplakic
- leukoencephalomyelitis
- leukaemic retinopathy
- leucotrichial
- leonine
- luting
- long winded
- lithia water
- lamplit
- logical
- logical access level
- look ahead
- labiolingual breadth
- loch achray
- locavore
- laryngostenosis
- leading phase
- leading questions
- last journey
- leaning tower