referring to a field, record, computer word, or other entity whose length does not vary.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use fixed-length in a sentence
For a line of fixed length and resistance, hard-drawn copper will weigh about two per cent more than soft copper.Electric Transmission of Water Power | Alton D. Adams
Not until the very end of the T'ang period did there appear the form of a "free" versification, with lines of no fixed length.A history of China., [3d ed. rev. and enl.] | Wolfram Eberhard
We do not know definitely that there was any fixed length for the school-year.The Private Life of the Romans | Harold Whetstone Johnston
There is no fixed length for the one-act play any more than there is for the short-story.One-Act Plays | Various