Crossword-Solution: PERIOSTRACUM
Dictionary
| Word | Word Type | Definition |
|---|---|---|
| Periostracum | n. | A chitinous membrane covering the exterior of many shells; -- called also epidermis. |
We have 1 clue for the answer “PERIOSTRACUM”
| Clue | Answers |
|---|---|
| the horny outer layer of a mollusc's shell | 1 answer |
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Hint 1 meaning
A moving of the mind or soul; excitement of the feelings,
whether pleasing or painful; disturbance or agitation of mind caused by
a specific exciting cause and manifested by some sensible effect on the
body.
Hint 2 anagram
TEOOINM
Hint 3 another clue
A FEELING OF GREAT ELATION
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Sentences with PERIOSTRACUM (5)
The strong corneous periostracum of a deep chestnut-color projects considerably beyond the margins of the valves; the shells are exceedingly thin and fragile, and are marked with radiating lines.
Among the shells, which were mostly dead ones, was a specimen of _cohongoronta_, dead, but in a fine state of preservation and with the periostracum nearly unblemished except for the usual erosion at the beaks.
Calcareous matter is deposited on the internal face of the new periostracum, at some distance from the margin.
When the animal has attained its full growth and the lip is finished off, the white band and the periostracum cells completely disappear, and only such cells persist as contribute to the internal thickening of the shell.
The fresh-water Mollusca secrete a strong periostracum, in order to protect the shell against the corrosive influence of the carbonic acid gas with which the water is surcharged.