spiro-, spir-, spira-, spirat-, -spire, -spiring, -spiration, -spirational

(Latin: breath of life, breath, breathing; mind; spirit, "soul"; courage)

Don't confuse this spiro-, with another spiro- meaning "coil, twisted".

photorespiration
1. The oxidation of carbohydrates in plants with the release of carbon dioxide during photosynthesis.
2. A process in which an organism takes in oxygen and releases carbon dioxide in the presence of light, occurring during photosynthesis in conditions in which there is a low concentration of carbon dioxide and intensive levels of light.
reinspiration
reinspire
respiration
respirative
respirator
respiratory
respire
spiracle
spirant
spirit
spirited
spiritedly
spiritedness
spiritism

Word units related to breath and breathe: hal-; pneo-; pneumato-; pneumo-; psych-.