The term RELATING TO PLANT LIFE can be summarized by the word 'botanic, ' which is a seven-letter word. Botanic is an adjective that refers to the scientific study of plants, including their structure, growth, reproduction, and classification. Botany is a branch of biology that deals with the study of plants, and botanists are scientists who specialize in this field. Botanic also refers to the cultivation and use of plants for medicinal, agricultural, and other purposes.