thioindigo (iou) and interosculant (medicine)

thioindigo (iou)

thioindigo noun. Pl. -os. E20.
[from THIO- + INDIGO.]
A red vat dye in which the two imino groups of indigotin are replaced by sulphur atoms. Also, = thioindigoid noun.
thioindigoid noun & adjective (a) noun any of a class of mainly orange, red, and violet vat dyes that are substituted Derivatives of thioindigo, used esp. in textile printing; (b) adjective of the Nature of a thioindigoid: M20.

interosculant (medicine)

interosculant

1. Mutually touching or intersecting; as, interosculant circles.

2. <biology> Uniting two groups; said of certain genera which connect family groups, or of species that connect genera. See Osculant.

Source: Websters Dictionary

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