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Related to plicae: Peyer's patches, Kerckring


n. pl. pli·cae (plī′sē, -kē)
A fold or ridge, as of skin, membrane, or shell.

[Medieval Latin, fold, from Latin plicāre, to fold; see plek- in Indo-European roots.]

pli′cal adj.


n, pl plicae (ˈplaɪsiː)
1. (Anatomy) anatomy Also called: fold a folding over of parts, such as a fold of skin, muscle, peritoneum, etc
2. (Pathology) pathol a condition of the hair characterized by matting, filth, and the presence of parasites
[C17: from Medieval Latin: a fold, from Latin plicāre to fold; see ply2]
ˈplical adj


(ˈplaɪ kə)

n., pl. pli•cae (ˈplaɪ si, -ki)
a fold, as of a mucous membrane.
[1675–85; < Medieval Latin: a fold, n. derivative of Latin plicāre to fold]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.plica - a folded part (as in skin or muscle)
anatomical structure, bodily structure, body structure, complex body part, structure - a particular complex anatomical part of a living thing; "he has good bone structure"
epicanthic fold, epicanthus - a vertical fold of skin over the nasal canthus; normal for Mongolian peoples; sometimes occurs in Down's syndrome
plica vocalis, vocal band, vocal cord, vocal fold - either of two pairs of folds of mucous membrane projecting into the larynx
ruga - (anatomy) a fold or wrinkle or crease; "rugae of the stomach"
tentorium - (anatomy) a fold of dura mater that covers the cerebellum and supports the occipital lobes of the cerebrum


A line or an arrangement made by the doubling of one part over another:
References in periodicals archive ?
Placed within the subfamily Ammodytinae, which also includes the genera Gymnammodytes and Hyperoplus, Ammodytes is diagnosed by the presence of scales deeply embedded in dermal plicae below the lateral line, a highly protrusible upper jaw (Pietsch, 1984), and non-expanded neural and haemal spines on the caudal vertebrae (Ida et al.
They are thought to be caused by abnormal insertion of the mesonephric ducts into the cloaca in the place of the normal plicae colliculi, which cause varying degrees of obstruction.
5 x as long as distance between inner edges of spiracles, median carina and plicae absent, and transversally reticulated between spiracles, the latter almost touching to posterior margin of metanotum.
The histopathological analysis revealed both cysts to be lined focally by ciliated and non-ciliated epithelium forming plicae.
High-signal intensity endocervical mucosa and glands (contains numerous folds and clefts as the plicae palmate).
Within 48 h, the gill plicae became contracted and showed multifocal epithelial hyperplasia, increased filament fusion, exfoliation of the frontal cilia, epithelial desquamation, and abnormal epithelial masses.
Outer lip almost flat in side view, with 4 slight, rounded serrations at terminations of spiral ridges; inner edge with 3 equal-sized, rounded teeth and sometimes a weak 4th; inner lip sigmoid, with a flattened callus deposit with slightly free edge, sometimes with a few feeble plicae, posterior end of aperture with a parietal pad.