thecal
thecal — adjective
- thecalpositive
- more thecalcomparative
- most thecalsuperlative
1. connected with a covering layer that surrounds and protects part of a body or or
connected with a covering layer that surrounds and protects part of a body or organism.
The MRI showed pressure on the thecal sac near Mei's lower back.
collocation: thecal sac
During surgery, the team protected the thecal layer around the nerve roots.
collocation: thecal layer
The lab report noted thick thecal cells around the growing follicle.
The surgeon said swollen thecal tissue was narrowing the space around the cord.
- capsular
used for capsule-like coverings and is not limited to a theca
- membranous
broader and can describe any thin membrane, not a specific protective sheath
- follicular
more specific to follicles and does not always imply the protective outer layer
文法句型
thecal + sac
thecal + layer
thecal + cells
thecal + tissue
用法筆記
Mostly used before nouns in anatomy and medical writing, especially with sac, layer, cells, and tissue. To name the covering itself, use the noun theca rather than the adjective thecal.