9-letter words containing a, b, s, o
- xenoblast — a crystal that forms in metamorphic rock and gets its outline from neighboring crystals.
- yearbooks — Plural form of yearbook.
- zero-base — Also, zero-based. without reference to a base figure or to previous practice; according to present needs only, as opposed to a percentage increase or decrease of previous figures: zero-base planning; zero-base inventory.