🗡️ Beheading 🐌 Shell tip loss

decollation

9.9

Loss of the top part of a snail's shell that leaves a blunt end

noun
/dɪˈkɒleɪʃən/

Specialized

: decollación

During decollation, the upper part of the shell is lost, leaving a blunt end.

Examples

Researchers documented the process of decollation in their study of mollusk shell development.
Many species exhibit decollation as they grow.
The scientist observed decollation in several snail species as they matured.
The decollation of the snail's shell was evident after the storm.
The scientist observed decollation in several snail species as they matured.
During decollation, the upper part of the shell is lost, leading to a truncated structure.
Researchers documented the phenomenon of decollation in their study on mollusk shell formation.

How Truncated

decollation

Specialized

9.9

truncation

1 7.3

chipping

3 3.8

wear

44 4.3

intactness

1 6.1

Surface Forms

decollation singular

decollations plural

Morphology

decollation = decollate (opaque) = de + coll + ion

Formed by regular noun derivation from the verb decollate with the suffix -ion; that step is morphologically clear if one knows the verb.

Etymology

Decollation in zoology also comes from de- 'off' and collum 'neck' and gives the image of the top being taken off a shell. So, think of a snail with its shell 'neck' removed to remember that decollation means losing the shell's upper part.