Fdikvg
The word used for one set of offspring is "progeny."
Fdikvg
foal
genes
chromosomes.
genes
The word that refers to one of nine children born together is "nona." In the context of multiple births, "nona" specifically denotes one of a set of nine offspring, known as nonuplets.
The term "offspring" is typically written as one word. It refers to the biological descendants of a particular organism.
The nine-letter word for child is "offspring."
One I know is grandchild.
Whenever one refers to an animals or humans offspring, such as; The mare's progeny were successful racehorses. Progeny is a fancy word for offspring.
The word "set" has one syllable.