- liquid petrolatum
- liquid propellant
- liquid purification
- liquid seal
- lithia
- lithic tuff
- lithographic limestone
- lithoidal
- lithopone
- live weight
- living hinge
- living rock
- liner packer
- linseed cake
- lip
- liquefied
- liquid asphalt
- liquid cooling
- liquid hydrocarbon
- liquid medium
- liquid solution
- liroconite
- litharge
- lithification
- lithium cell
- lithium mica
- lithographic
- lithographic stone
- lithophylic element
- lithostratigraphic unit
- litmus paper
- littoral
- littoral deposit
- littoral zone
- live oil
- live reef
- liver ore
- lixivium
- Llandoverian stage
- Llanvirnian stage
- load center
- load metamorphism
- loader
- loading
- loading bin
- loading point
- loading test
- loan
- location survey
- lock angle
- lock screw
- locking ring
- lode deposit
- loess
- lined
- liner
- liner hanger
- linn
- lipolytic
- lipophilic
- liquefaction method
- liquefaction yield
- liquefier
- liqueur
- liquid assets
- liquid bypassing
- liquid cryogen
- liquid extract
- liquid measure
- liquid oxygen
- liquid rubber
- liquor
- list price
- lithogeneous
- lithophysa
- lithotope
- litmus
- live axle
- live steam
- liver oil
- lixiviation tank
- lizard-stone
- Llandcilian stage
- loading function
- loading rack
- loading station
- loading terminal
- loadstone
- loading gauge
- loading rate
- loading tax
- loan certificate
- local attraction
- local unconformity
- lock washer
- lode ore
- log
- logarithmical paper
- logging
- locust