psy·cho·met·ric \|sīkə|me.trik\adjective Etymology: International Scientific Vocabulary psych- + -metric 1.: relating to the measurement of mental or subjective data 2.: relating to or being a mental test or psychological method whose results are expressed quantitatively rather than qualitatively • psy·cho·met·ri·cal·ly\-rə̇k(ə)lē\adverb