a. [f. LICHEN sb. + -OID.]
1. Bot. Resembling a lichen; lichen-like.
1830. Lindley, Nat. Syst. Bot., 332. Opegrapha and other Lichenoid … genera.
1866. Intell. Observ., No. 53. 340. Corrugated or lichenoid ball.
1882. P. Geddes, in Nature, No. 642. 361. The hypothesis of the lichenoid nature of the alliance between alga and animal.
2. Path. Resembling the disease lichen (see LICHEN sb. 3).
1859. Semple, Diphtheria, 97. A whitish, lichenoid, pellicular exudation … covered a third of the surface of the left tonsil.
1899. J. Hutchinson, Archives Surg., X. 175. His forehead and some other parts were covered with a form of lichenoid eczema.
