A warm, dry postglacial interval.

A work of art or drama which evokes a particular historical era. / A work which evokes the era in which it was produced, but may not have any other especial features.

plural of periodic table

(astronomy) A comet which orbits the Sun and which returns to the innermost point of its orbit at known, regular intervals.

(rhetoric) A sentence whose main clause appears at its end.

(of an astronomic object) The time taken to rotate about its axis relative to the background stars.

rotational period

A relatively brief period when a new leader is given greater leeway with respect to changes he or she wishes to make.

A period during which a new employee is monitored to assess his/her capability.

plural of xerothermic period