combining form of Gr. καρδία heart, as in Cardiograph [Gr. -γράφος writing, writer], an instrument that registers the motions of the heart by tracing a curve on paper, etc. Cardiography [Gr. -γραφία writing], a. in anatomy, ‘a description of the heart’ (Craig); b. ‘the application and use of the cardiograph’ (Syd. Soc. Lex.). Cardiology [Gr. -λογία discourse], knowledge of, or a treatise on, the heart. Cardiometer [Gr. -μέτρον measure], an instrument for measuring the force of the heart’s action; also fig.; hence Cardiometrical a. Cardiometry [Gr. -μετρία measurement], ‘the measurement of the size of the heart by percussion and auscultation’ (Syd. Soc. Lex.). Cardiopathy [Gr. -παθία suffering], disease of the heart.
1870. S. Gee, Auscult. & Percuss., iii. 48. The *Cardiograph is an instrument invented by Chauveau and Marcy, whereby the movements of the cardiac impulse may be registered.
1847. Craig, *Cardiology.
1860. Reade, Cloister & H. (ed. 2), II. 334. I called little Kate’s hand a *Kardiometer, or heart-measurer, because it graduated emotion, and pinched by scale.
1875. H. C. Wood, Therap. (1879), 151. The individual beat will influence the mercurial column of the cardiometer.
1878. Rep. Smithsonian Inst., 423. Careful *cardiometrical studies showing that the arterial pressure is not seriously affected.
1885. Lancet, 1 Aug., 219/2. The commonest age at which the *cardiopathy manifests itself … is from forty to forty-six.
