Half-length a. : Of half the whole or ordinary length, as a picture.

Example:
What is the Half-length for absorption of a beam of radioactive decay products?

Taxonomy
half-length portrait, upper half, hands, WordNet, body, computer science, Unanswered questions, mathematics, Dictionary of the English Language, Houghton Mifflin Company, technology, hăf, häf, full length, Search, word meaning, waist, adjective.

Defination from the web:
half-length n. A portrait that shows only the upper half and hands of a person. adj. Of or relating to a half-length portrait ... WordNet: half-length. Top. Home > Library > Literature & Language > WordNet. Note: click on a word meaning below to see its connections and related words. ...