1. That is to say; in other words
   - i.e., ie

Encyclopedia: Id est

• line-drive single
• line-drive triple
• line-out
• line-shooter
• line-shooting
• lineage
• lineal
• lineally
• lineament
• linear
• Linear A
• linear accelerator
• linear algebra
• Linear B
• linear equation
• linear leaf
• linear measure
• linear operator
• linear perspective
• linear programming
• linear regression
• linear unit
• linearise
• linearity
• linearize