12-letter words containing z, e, r, o
- zero gravity — the condition in which the apparent effect of gravity is zero, as in the case of a body in free fall or in orbit.
- zero grazing — a type of dairy farming in which the cattle are fed with cut grass
- zero tillage — no-tillage.
- zero-divisor — a nonzero element of a ring such that its product with some other nonzero element of the ring equals zero.
- zielona gora — a city in W Poland.
- zillionaires — Plural form of zillionaire.
- zone of fire — the area within which a unit is prepared to place its fire.
- zone therapy — a type of massage which works on the theory that specific parts of the foot or palm of the hand are associated with different parts of the body, and that massaging the feet or hands will give the patient relief from disorders in the related part of the body
- zoochemistry — the branch of chemistry dealing with the constituents of the animal body; animal chemistry.
- zoochlorella — any of various symbiotic green algae in the cytoplasm of certain freshwater invertebrates, as stentors and hydras.
- zoogeography — the science dealing with the geographical distribution of animals.
- zorn's lemma — a theorem of set theory that if every totally ordered subset of a nonempty partially ordered set has an upper bound, then there is an element in the set such that the set contains no element greater than the specified given element.
- zuse, konrad — Konrad Zuse
- zwitterionic — an ion with both a positive and a negative charge.