halfth adjective 1noun 1forms 1 adjective1 •The ordinal form of half; ½; 50%; .5.Take the halfth one on the left, and repeat each halfth one thereafter.She lived in an apartment on Twenty-Eight and a Halfth Street. noun1 •(nonstandard) One half; half of one.Can I get a gram of indica and a halfth of sativa? formshalfths
