The Collaborative International Dictionary
Decillionth
Decillionth \De*cil"lionth\, a. Pertaining to a decillion, or to the quotient of unity divided by a decillion.
Decillionth
Decillionth \De*cil"lionth\, n.
The quotient of unity divided by a decillion.
One of a decillion equal parts.
Wiktionary
decillionth
a. The ordinal form of the number decillion n. 1 The person or thing in the decillionth position. 2 One of a decillion equal parts of a whole.
Usage examples of "decillionth".
But for persons of very delicate nerves it is proper that the dilution should be carried to the decillionth degree.
There are those whose minds are satisfied with the decillionth dilution of a scientific proof.