Gigaannum

Quick meaning: Gigaannum is a noun meaning Alternative spelling of giga-annum (“gigayear, a billion years”).

Meaning

Alternative spelling of giga-annum (“gigayear, a billion years”).

Example Sentences

It is noteworthy that biological phenomena occur at scales ranging from nanometers to megameters, and from nanoseconds to gigaannums.

The oldest materials ever found in the Solar System occur in meteorites ~4.57 Ga (gigaannum or billion years ago) of age, marking the starting point for the condesation of the first solids in our Solar System.

Studies of the Earth’s processes, phenomena, and origins are unique in the physical sciences for their need to observe and measure past events over spatial and temporal scales that range from the micron and second to the astronomical unit and gigaannum.

Word Forms

• gigaannums

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