| 释义 |
pen·na·les
\pəˈnā(ˌ)lēz\ noun plural
Usage: capitalized
Etymology: New Latin, from Latin penna feather + New Latin -ales
: an order of diatoms having a raphe or pseudoraphe and ornamentation of the valves always bilaterally arranged in relation to a line rather than to a point — compare centrales |