Definition of follicle in English:
1 Anatomy A small secretory cavity, sac, or gland, in particular.
- Associated with the follicle are sebaceous glands and the arrector pili smooth muscle fiber bundle.
- These drugs penetrate the follicle and sebaceous gland well and decrease colonization by P. acnes.
- Then, a fluidfilled space develops, to form the antrum of a tertiary follicle.
1.1 (also hair follicle) The sheath of cells and connective tissue that surrounds the root of a hair.
- But with first-time waxers, the hair follicle is often surrounded by something similar to a whitehead, so when you rip it out it can cause a bit of bleeding.
- The cells that supply the hair follicle remain active, so the potential for re-growth is always there.
- Folliculitis presents with a subcorneal pustule in the opening of a hair follicle, with surrounding neutrophilic infiltrate.
1.2 short for Graafian follicle.
- In most normal human menstrual cycles only one follicle reaches full maturity, to be released at ovulation, on about day 14.
- The ovary consists of a cortical zone composed of a specialized stroma, which contains follicles with ova.
- De Graaf, working without the aid of a microscope, made the error of thinking that the fluid-filled follicles were the ova themselves.
2 Botany A dry fruit that is derived from a single carpel and opens on one side only to release its seeds.
- The fruits produced by these partially emasculated flowers were single follicles and contained relatively few seeds.
- A fruit may consist of a single follicle or two joined follicles.
- The three fruits that were formed by flowers in the emasculation treatment were single follicles.
late Middle English: from Latin folliculus 'little bag', diminutive of follis 'bellows'.
- Example sentences
- Evidence suggests the drug will double the re-mission time of patients diagnosed with follicular non-Hodgkin's lymphoma.
- It also appears that she is meticulously adept at removing unwanted follicular effluents.
- I set off clubbing in a confident mood, now colour co-ordinated in both the sartorial and follicular departments.
- Example sentences
- This finely folliculate white structure is loosely surrounded by a thin reticulated black epithelium.
Pronunciation: /fəˈlikyələt, -ˌlāt/adjective
Definition of follicle in:
- British & World English dictionary
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