the ratio of the mass of a fully-fuelled rocket at liftoff to the mass of the rocket without fuel
9 Common Grammatical PitfallsRead more in this article about some frequently asked questions and fun facts related to our definitions.
When To Use Definite vs. Indefinite ArticlesArticles are a unique type of adjectives that indicate which noun (person, place, or thing) you’re talking about. The only definite article in English is the, and it refers to a specific noun. Indefinite articles (a or an) refer to nouns more generally. Indefinite Articles Indefinite articles refer to non-specific nouns. Think “I need a pen” or “I want an orange.” In both cases, we …
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Examples from the Web for mass ratio
With contragravity, of course, terms like "escape-velocity" and "mass-ratio" were of purely antiquarian interest.Uller Uprising|Henry Beam Piper, John D. Clark and John F. Carr