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.
There is often confusion between weather and climate. Weather is the day to day condition of the atmosphere at a particular place while climate is an average of weather condition at a particular place over a long period of time. Weather is the condition of the atmosphere at a particular place over a short period of time.