reticulum noun. [rɪ'tɪkjʊlǝm] Pl. -la [-lǝ]. M17.
[Latin, dim. of rete net: see -CULE.]
1. Anatomy. The second stomach of a ruminant. M17.

2. Architecture. Reticular masonry. rare. L18.

3. (Usu. Reticulum.) (The name of) a small constellation of the southern hemisphere between Dorado and Hydrus; the Net. E19.

4. Chiefly Biology. A netlike structure; a fine network of fibres, vessels, etc. M19.
b. Anatomy. Reticular tissue. L19.
c. Cytology. A fine network within the cytoplasm of a cell. Now only in ENDOPLASMIC reticulum, SARCOPLASMIC reticulum. L19.
d. = RETICULIN. Now rare or obsolete. E20.

Comb.:
reticulum cell a cell of the reticuloendothelial system.

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