7-Letter Words Starting: OPE

• first or beginning

• an open or empty space in or between things

• a ceremony accompanying the start of some enterprise

• becoming open or being made open

• the first performance (as of a theatrical production)

• the act of opening something

• opportunity especially for employment or promotion

• the initial part of the introduction

• a possible alternative

• an aperture or hole that opens into a bodily cavity

• a vacant or unobstructed space that is man-made

• an entrance equipped with a hatch; especially a passageway between decks of a ship

• a recognized sequence of moves at the beginning of a game of chess

• the first of a series of actions

• a quantity upon which a mathematical operation is performed

• direct or control; projects, businesses, etc.

• perform as expected when applied

• handle and cause to function

• perform a movement in military or naval tactics in order to secure an advantage in attack or defense

• keep engaged

• perform surgery on

• having influence or producing an effect

• characterized by effort to the point of exhaustion; especially physical effort

• the first event in a series

• a person who unfastens or unwraps or opens

• a hand tool used for opening sealed containers (bottles or cans)

• a segment of DNA containing adjacent genes including structural genes and an operator gene and a regulatory gene