ballast keel
noun
A weight attached to or incorporated into the keel of a vessel to serve as ballast; especially a heavy metal moulding attached to the keel of a sailing vessel.
Origin
Early 19th century.
- photoinduce
- photoinduced
- photoinducible
- photoinduction
- photoinductive
- photoinductive cycle
- photoinhibition
- photoinitiated
- photoinitiator
- photo ink
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- photointerpretation
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- photoion
- photoionisation
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- photoionization
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- photoisomeric
- photoisomerisation
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- photoisomerism