Heart Palpitation: 8 Reasons for Your Abnormal Heartbeat. Heart palpitations occur when the heart beat increasesâit may noting a flutter, skipped beat, or heart rate thatâs abnormally hard and fast in your chest, throat, or neck. Heart palpitations can be frightening if youâve never experienced them before.
a combining form meaning âwater,â used in the formation of compound words: aquiclude; aquiculture; aquifer. Also, aqua-. Origin of aqui-.
countable noun. 1  In geology, an aquifer is an area of rock underneath the surface of the earth which absorbs and holds water. 2  a porous deposit of rock, such as a sandstone, containing water that can be used to supply wells. 3  an underground layer of porous rock, sand, etc. containing water, into which wells can be sunk.