regrow

Everyday

1. To grow again after being cut, lost or damaged: Lizards can regrow their tails. tree →
2. To make something grow again: regrow a forest. tree →

In the lessons

In science lessons: plants regrow from roots or cuttings; starfish regrow arms; some lizards regrow tails; human hair and nails regrow but teeth do not after adult ones. In maths: «Grass regrows 2 cm a week». In everyday life you can regrow spring onions in water. Phrases: «regrow a tail», «regrow from seed», «regrow hair».

Examples

• A starfish can regrow a lost arm. tree →
• The forest will regrow after the fire. tree →
• You can regrow lettuce from its stump. tree →
• My hair regrew after the haircut. tree →
• The grass regrows 3 cm each week; how much in 4 weeks? tree →
• Some lizards regrow their tails. tree →
• Adult teeth cannot regrow if they fall out. tree →

Note

Irregular like «grow»: regrow, regrew, regrown. Prefix «re-» = again. Noun: regrowth. Myth: cut worms do not always regrow into two worms.