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Beekeeping Glossary

A B C D E F G H I L M N O P Q R S T U V W

Orientation Flights

Short flights taken in front and in the vicinity of the hive by young bees to acquaint them with hive location; sometimes mistaken for robbing or swarming preparations.

Osmotic Pressure

The minimum pressure that must be applied to a solution to prevent it from gaining water when it is separated from pure water by a permeable membrane; in honey, its ability to absorb water from the air or other microscopic organisms, about 2000 milliosmoles/kg.

Outer Cover

The last cover that fits over a hive to protect it from rain; the two most common kinds are telescoping and migratory covers.

Outyard

Also called out apiary, it is an apiary kept at some distance from the home or main apiary of a beekeeper; usually over a mile away from the home yard.

Ovary

The egg producing part of a plant or animal.

Ovule

An immature female germ cell, which develops into a seed.

Oxytetracycline

An antibiotic sold under the trade name Terramycin; used to control American and European foulbrood diseases.