weightlessness weightlessly • weightometer · · · Info · Definitions · Synonyms · Characters · · weightlessness · · Text Latin · · Script 14 · · Length Definitions · · · (noun) the property of being comparatively small in weight. Synonyms: lightness. Example: "The lightness of balsa wood." · · Noun Definition 1 Synonyms · · · lightness · · Synonym 1 Characters · · e latin small letter e U+0065 g latin small letter g U+0067 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E s latin small letter s U+0073 t latin small letter t U+0074 w latin small letter w U+0077