the.com/inhalation

means The act of drawing air into the lungs, the half of breathing that fills you back up.

from From Latin inhalare, 'to breathe in' — built from the prefix in- ('into') plus halare ('to breathe'). The same halare root, often strengthened to halitus ('breath'), also gave English 'exhale' and, less flatteringly, 'halitosis.' The word passed into English in the 1600s via scientific and medical Latin, part of a wave of anatomical terms coined to sound precise rather than poetic.