The natural cycle of evaporation of water from the oceans etc, and subsequent condensation and precipitation as rain and snow

(biology) A form of viral reproduction involving the fusion of the nucleic acid of a bacteriophage with that of a host, followed by proliferation of the resulting prophage

(biology) The normal process of viral reproduction involving penetration of the cell membrane, nucleic acid synthesis and lysis of the host cell

Alternative form of vicious circle

(biochemistry) A series of metabolic reactions by which many different organisms utilise fats for the synthesis of carbohydrates

(systems theory) A closed trajectory in phase space of a dynamical system having the property that at least one other trajectory spirals into it either as time approaches infinity or as time approaches minus-infinity.

plural of life cycle

A part of a roadway designated for use by cyclists.

(cycle racing) A form of cycling on a specially-designed track, especially, a velodrome

(economics) A long-term fluctuation in economic activity between growth and recession.