stigma (redirected from malpighian stigmas)

stigma /stig·ma/ (stig´mah) pl. stigmas, stig´mata   [Gr.]

1. any mental or physical mark or peculiarity that aids in identification or diagnosis of a condition.

2. a mark, spot, or pore on the surface of an organ or organism.

3. follicular s.

4. a distinguishing personal trait that is perceived as or actually is physically, socially, or psychologically disadvantageous.

5. in the plural, purpuric or hemorrhagic lesions of the hands and/or feet, resembling crucifixion wounds.stig´malstigmat´ic

---

follicular stigma  a spot on the surface of an ovary where the vesicular follicle will rupture and permit passage of the secondary oocyte during ovulation.

malpighian stigmas  the points where the smaller veins enter into the larger veins of the spleen.

---

stig·ma (stgm)

n. pl. stig·mas or stig·ma·ta (stg-mät, -mt, stgm-)

1. Visible evidence of a disease.

2. A spot or blemish on the skin.

3. A bleeding spot on the skin considered as a manifestation of conversion disorder.

4. The orange pigmented eyespot of certain chlorophyll-bearing protozoa, such as Euglena viridis. It serves as a light filter by absorbing certain wavelengths.

5. A mark of shame or discredit.

6. Follicular stigma.

---

stigma

pl. stigmas, stigmata [Gr.] any physical mark or peculiarity that aids in identification or diagnosis of a condition.

---

follicular stigma

a 2 mm wide band around the meridian of all follicles greater than 4 mm diameter in the left ovary of the domestic fowl.

---

stigma A sign, mark, feature, indicator of something, which generally has a negative connotation