The circle around the celestial sphere that is halfway between the celestial poles. It can be thought of as the plane of Earth’s equator projected out onto the sphere.
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The figure, statue, or bust, on the prow of a ship. A person who allows his name to be used to give standing to enterprises in which he has no responsible interest or duties; a nominal, but not real, head or chief.
To haul under the keel of a ship, by ropes attached to the yardarms on each side. It was formerly practiced as a punishment in the Dutch and English navies.
The average of the maximum and the minimum temperatures for a particular period; the mean equals the sum of the max and min divided by two.
The temperature to which a given parcel of air must be cooled before it becomes saturated; the temperature of an object when dew first forms on it.
A tide with one high water and one low water in a tidal day of approximately 24 hours.
A name used in calling a hen or chicken. An Irish serving woman or girl.
The study of natural periodic events in the life-cycle of plants (and animals).