12-Letter Words Containing: A,R,R,O,A,S

• A technique in which drawings are created using sharp knives and tools for etching into a thin layer of white china clay that is coated with black India ink.

• a gas that makes the eyes fill with tears but does not damage them; used in dispersing crowds

• any one of four endocrine glands situated above or within the thyroid gland

• A fibroblastic sarcoma: a malignant tumor derived from fibrous connective tissue

• An instrument which, placed in contact with the chest, graphically registers the comparative duration and intensity of the heart's movements

• A telescope that has an attachment which blocks out the direct light from the sun or other star, allowing examination of the corona and the detection of exoplanets