Inhalation/ˌɪnhəˈleɪʃn/ Definition 1 of 3Pro Tip 1/3Breathing Focus In non-medical contexts, 'inhalation' often relates to breathing mindfully, like in yoga. Mindful inhalation can reduce stress. Pro Tip 2/3Not Always Voluntary Inhalation isn't always intentional; sometimes we inhale without focusing on it. Inhalation happens naturally while sleeping. Pro Tip 3/3Partial Phrases 'Inhalation' can be part of a common phrase like 'take a deep inhalation'. After running, she took a deep inhalation.