7-Letter Words Containing: I,R,O,N

• the line at which the sky and Earth appear to meet

• the range of interest or activity that can be anticipated

• a specific layer or stratum of soil or subsoil in a vertical cross section of land

• the great circle on the celestial sphere whose plane passes through the sensible horizon and the center of the Earth

• a common mineral occurring in small crystals; chief source of zirconium; used as a refractory when opaque and as a gem when transparent

• of or relating to the null set (a set with no members)

• a quantity of no importance; thing (object:), singular, negative pronoun; pronoun, thing, singular; quantifier: negative existential

• a mathematical element that when added to another number yields the same number

• the point on a scale from which positive or negative numerical quantities can be measured

• the sight setting that will cause a projectile to hit the center of the target with no wind blowing

• indicating the absence of any or all units under consideration

• having no measurable or otherwise determinable value

• indicating an initial point or origin

• adjust (an instrument or device) to zero value

• adjust (as by firing under test conditions) the zero of (a gun)

• fine woodwork done by a joiner

• the craft of a joiner

• A Gypsy

• A device that ionizes

• To use irony

• To treat something in an ironic fashion

• a mine or quarry that is being or has been worked

• actively engaged in paid work

• adequate for practical use; especially sufficient in strength or numbers to accomplish something

• adopted as a temporary basis for further work

• (of e.g. a machine) performing or capable of performing

• serving to permit or facilitate further work or activity