monotreme

IPA(Pronunciation)

Adjective

not-comparable of a pollen grain

(palynology, of a pollen grain) Having a single trema, or aperture.

Japanese Meaning

（花粉学）1つのトレマ（開口部や小さな穴）を有する

Under the microscope, the monotreme pollen grain revealed a well-defined aperture that helped identify its species.

顕微鏡下で、その単気孔性の花粉粒は明瞭な開口部を示し、種の同定に役立った。

Sense（1）

(palynology, of a pollen grain) Having a single trema, or aperture.

Nomotreme fern and moss spores are monotreme.