Loosley meaning ‘in return’, based on the stricter mathematical sense of the word, found in financial and scientific theories, where reciprocalLoosley meaning 'in return', based on the stricter mathemati... refers to the number or fraction which when multiplied by a specified other number or fraction will produce the number one. For example a half is the reciprocalLoosley meaning 'in return', based on the stricter mathemati... of the number two; and a fifth is the reciprocalLoosley meaning 'in return', based on the stricter mathemati... of the number five. The word derives from Latin ‘re’ (back) and ‘pro’ (forward).-