heterostracan
Word Rarity
Very rare
Frequency: Zipf frequency 0.00 in modern English
18
Scrabble Score
13
Letters
4
Syllables
9
Unique Chars
Meaning
noun
Any of the subclass Heterostraci of extinct jawless vertebrates that lived primarily in marine and estuary environments.
Etymology
Heterostraci + -an
Word Breakdown
- Suffix: an