Libetian adjective 1noun 1forms 3 adjective1 •Of or relating to Benjamin Libet (1916–2007), pioneering scientist in the field of human consciousness.The jury is still out, because the Libetian literature remains almost entirely about spontaneous decisions regarding some fairly simple things. — 2023 noun1 •A follower of Libet's ideas.For Libetians, these studies show that our brains decide to carry out behavior before we think that we've freely and consciously done so. — 2023 formsLibetians · more Libetian · most Libetian