Definition that contains only when
- reserve an athlete who plays only when a starter on the team is replaced
- substitute an athlete who plays only when a starter on the team is replaced
- cashew kidney-shaped nut edible only when roasted
- cashew tropical American evergreen tree bearing kidney-shaped nuts that are edible only when roasted
- amiodarone an antiarrhythmic drug (trade name Cordarone) that has potentially fatal side effects and is used to control serious heart rhythm problems only when safer agents have been ineffective
- billabong a branch of a river made by water flowing from the main stream only when the water level is high
- recessive (of genes) producing its characteristic phenotype only when its allele is identical
- recessive an allele that produces its characteristic phenotype only when its paired allele is identical
- anamorphism a distorted projection or perspective; especially an image distorted in such a way that it becomes visible only when viewed in a special manner
- writ of mandamus an extraordinary writ commanding an official to perform a ministerial act that the law recognizes as an absolute duty and not a matter for the official's discretion; used only when all other judicial remedies fail