Hypernyms (medication is a kind of...): drug (a substance that is used as a medicine or narcotic). Meronyms (substance of medication): physostigmine (used in treatment of Alzheimer's disease and glaucoma).
Definition of weather for English Language Learners. : the state of the air and atmosphere at a particular time and place : the temperature and other outside conditions (such as rain, cloudiness, etc.) at a particular time and place.
The state of the atmosphere at a particular time and place. Weather is described by variable conditions such as temperature, humidity, wind velocity, precipitation, and barometric pressure. See also atmosphere; climate; clouds; lightning; rain; snow; sun; thunder; wind.