The word "moiety" is correct and usable in written English.
It is typically used in scientific or legal contexts to refer to a part or portion of something, often in relation to a whole.
Example: "In the study of genetics, each parent contributes a moiety of the genetic material to their offspring."
Alternatives: "Part" or "Fraction."
Acetyl-ACP and malonyl-ACP react in a reaction catalyzed by β-ketoacyl-ACP synthetase so that the acetyl moiety (CH3CO−) is transferred to the malonyl moiety (-OOCH2CO−).
In the cycle following the one ending with [67], the butyryl moiety is transferred to malonyl-S-ACP, and a molecule of carbon dioxide is again lost; a six-carbon compound results.
In [86] the addition of a deoxyribonucleoside monophosphate (dNMP) moiety onto a growing DNA chain (5′-DNA-polymer-3′-ΟΗ) is shown; the other product is inorganic pyrophosphate.
Nucleotides, the fundamental units of RNA (ribonucleic acid) and DNA (deoxyribonucleic acid), contain a phosphate molecule attached to a nucleoside, a compound made up of a ribose moiety and a purine or pyrimidine base.
Moiety system, also called dual organization, form of social organization characterized by the division of society into two complementary parts called "moieties".
Occasionally, if incorrectly, "moiety" is used more loosely to refer simply to one of two divisions of a society.
The two moieties make alternate appearances.
In reaction [83], R and R′ represent the hydrocarbon moieties (Ch3(CH2)n−) of two fatty acid molecules.
The first holds good, for example, for the Australians, for whom natural things are associated with cultural groups (moieties, sections, subsections, phratries, clans, or the association of persons from the same sex).
Among the Wiradjuri, an Aboriginal people who traditionally lived in New South Wales Australiaa), totem clans are divided among two subgroups and corresponding matrilineal moieties.
In Inca society every town and every city was divided physically and socially into two halves or moieties, hanan (upper) and hurin (lower).
