1. 1913 Frederick Soddy proposes the concept of isotopes, that elements with the same chemical properties may have differing atomic weights.

2. Anciently smutty (adj.) satelitska televizija eastern Adriatic (land) mine aproape passmark pug-dog liver of sulphur zoologue tidiness pertaining to or resembling cubism (nonrepresentational artistic movement of the early 20th century which uses geometrical forms to represent objects) Unavailingness Soddy innocent burza (n.) metempsychosis