By using this site you consent to the use of cookies for the sole purpose of providing the full functionality of this website and its related services.

For more information please refer to Terms of use and Privacy & Cookies   No Thanks

Glossary

Term Description
ODN Ordnance Datum Newlyn the standard reference level for OS maps throughout the UK.
Offshore The zone beyond the nearshore zone where sediment motion induced by waves alone effectively ceases.
Order of magnitude Within a factor of ten; 1 x 101 = 10, 1 x 102 = 100, 1 x 103 = 1000
Organism Any living animal or plant; anything capable of carrying on life processes.
OS Ordnance Survey
Osmosis Diffusion of a solution through a semi-permeable membrane into a more concentrated solution, tending to equalise the concentrations on both sides of the membrane.
OSPAR The Convention for the Protection of the Marine Environment of the North-East Atlantic
Overtide A harmonic tidal (or tidal current) constituent with a speed that is an exact multiple of the speed of one of the fundamental constituents derived from the development of the tide-producing force. The presence of overtides is usually attributed to shallow water conditions.
Oxidation The combination of oxygen with a substance, or the removal of hydrogen from it or, more generally, any reaction in which an atom loses electrons.
Oxygenation The process of adding dissolved oxygen to a solution.

Glossary index

A B C D E F G
H I J K L M N O
P Q R S T U
V W X Y Z
View all

Last Modified on: 19 June 2011
Printed from the Estuary Guide on 26/08/2019 04:44:29