sympatho-|ˈsɪmpəθəʊ|combining form of sympathetic a. (n.), used to form terms relating to the sympathetic nervous system; also symˈpathico-; ˌsympathoˈgonia|-ˈgəʊnɪə|n.pl.Med.[ad. G. sympathogonien (H. Poll 1906, in O. Hertwig Handb. d. vergleichenden und exper. Entwickelungslehre d. Wirbeltiere V. iii. i. 460), f.Gr. γόνος offspring, begetting], undifferentiated embryonic cells of the sympathetic nervous system which give rise to sympathoblasts; also used as sing.; ˌsympathogoniˈoma, symˌpathicogoniˈoma[-oma], a malignant tumour composed chiefly of sympathogonia.1934Jrnl.Path. & Bacteriol. XXXIX. 28 The sympathogonia from which the medulla of the suprarenal takes origin, as first described by Wiesel (1902), began to invade the anlage of the adrenal cortex.1966Pharmacol.Rev. XVIII. 659 The common progenitor, called sympathogonia, is a small lymphocyte-like cell with a dense, chromatin-rich, spherical or pyriform nucleus and a scanty rim of clear, poorly-staining cytoplasm.1934Jrnl.Path. & Bacteriol. XXXIX. 28 Those formed of sympathogonia have been classified as sympathogoniomas.1966Pharmacol.Rev. XVIII. 659 Each of these three types of sympathetic cell may give rise to a tumor: the sympathogonia to a sympathogonioma; the sympathoblast to a sympathoblastoma; and the ganglion cell to a ganglioneuroma.1974Oncology XXIX. 521 Tumour biopsies of a..sympathicogonioma..were obtained when the tumours were removed surgically.
sympatho-/ˈsɪmpəθəʊ/combining form.
ORIGIN: from sympath(etic: see -o-.
Forming nouns and adjectives in sense ‘of or pertaining to the sympathetic nervous system’.
sympatho- combining form Etymology: New Latin sympathicus — more at sympathico- : sympathetic < sympatholytic >