Noah Webster's 1828 American Dictionary of the English Language is regarded by many as the finest English
dictionary ever published. The dictionary is available in many forms. I made the content available here for my own purposes,
out of personal admiration for this particular dictionary.
AP'ATITE, n. [From Gr. to deceive; it having been often mistaken for other minerals.] A variety of phosphate of lime; generally crystallized in low, flat, hexahedral prisms, sometimes even tabular. Its powder phosphoresces on burning coals. The phosporite of Werner includes the massive and earthy varieties of the phosphate, which are distinguished from the apatite, by their containing a small portion of fluoric acid.