Thesaurus / precursor
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.


Not only do they come from myriad sources—asphalt is a big one, but paints and other products also release the precursor compounds to pollutants—but the chemical reactions that create these secondary compounds are also complex.

Continuously monitoring these types of carbon dioxide emissions in the Apennines and other seismically active regions, such as California and Japan, could reveal whether uprising gas is a precursor or product of quakes, he says.

SAC is also working on ways to verify the self-reported data behind the scores, as a precursor to making some of the data public next year.

Monkeys’ greater difficulty learning recursive sequences, relative to people, fits a scenario in which “this ability is evolutionarily ancient and could have been a precursor to the development of human grammar,” Ferrigno says.

Preserving some of the stylized features of its heavy precursor, the lighter Chalcidian helmet was also imbued with practical design upgrades that allowed its wearer to have better hearing and relatively unimpeded vision.

Perhaps, she told herself, this mood too would pass like its precursor.

FlintMaud Wilder Goodwin

The chirograph was the precursor of the modern indenture, the commonest form of English deeds, though no longer a tally.

This was probably the precursor of Kabul itself, and other "Begrams" are known in India.

The Gates of IndiaThomas Holdich

This is the first announcement of a fixed abiding presence of God in the midst of men, and it is therefore the precursor of much.

Her human nature can scarcely repress such an exclamation, which is too often but the precursor of her own ruin.


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Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.