From Biology-Online Dictionary | Biology-Online Dictionary


1. To make or set open; to render free of access; to unclose; to unbar; to unlock; to remove any fastening or covering from; as, to open a door; to open a box; to open a room; to open a letter. And all the windows of my heart I open to the day. (Whittier)

2. To spread; to expand; as, to open the hand.

3. To disclose; to reveal; to interpret; to explain. The king opened himself to some of his council, that he was sorry for the earl's death. (bacon) Unto thee have I opened my cause. (Jer. Xx. 12) While he opened to us the Scriptures. (Luke xxiv. 32)

4. To make known; to discover; also, to render available or accessible for settlements, trade, etc. The english did adventure far for to open the North parts of America. (abp. Abbot)

5. To enter upon; to begin; as, to open a discussion; to open fire upon an enemy; to open trade, or correspondence; to open a case in court, or a meeting.

6. To loosen or make less compact; as, to open matted cotton by separating the fibres. To open one's mouth, to speak. To open up, to lay open; to discover; to disclose. Poetry that had opened up so many delightful views into the character and condition of our bold peasantry, their country's pride.' (Prof. Wilson)

Origin: AS. Openian. See Open,a.