DOS 
(dŏs, dôs)
(dŏs, dôs)n.
Any of a family of operating systems that use command lines and were originally developed for personal computers made by IBM.
[D(ISK) O(PERATING) S(YSTEM).]
- biblio-
- bibliographer
- bibliographic
- bibliographical
- bibliographically
- bibliography
- bibliolater
- bibliolatrous
- bibliolatry
- bibliomancy
- bibliomania
- bibliomaniac
- bibliomaniacal
- bibliophil
- bibliophile
- bibliophilism
- bibliophilist
- bibliophilistic
- bibliopole
- bibliopolic
- bibliopolical
- bibliopolist
- bibliotheca
- bibliothecal
- bibliotherapy