a. 锯齿状的

[医] 锯齿状的

[ adj ]
notched like a saw with teeth pointing toward the apex
<adj.all>

Serrate \Ser"rate\, Serrated \Ser"ra*ted\, a. [L. serratus, fr.
serra a saw; perhaps akin to secare to cut, E. saw a cutting
instrument. Cf. {Sierra}.]
1. Notched on the edge, like a saw.

2. (Bot.) Beset with teeth pointing forwards or upwards; as,
serrate leaves.

{Doubly serrate}, having small serratures upon the large
ones, as the leaves of the elm.

{Serrate-ciliate}, having fine hairs, like the eyelashes, on
the serratures; -- said of a leaf.

{Serrate-dentate}, having the serratures toothed.