English Dictionary

aphotic

IPA（発音記号）

/eɪˈfəʊtɪk/

形容詞

Having no light, especially no sunlight; specifically (biology, oceanography) describing that part of deep lakes and oceans where less than one per cent of sunlight penetrates and where photosynthesis is not possible.

日本語の意味

光が全くない、または太陽光がほとんど届かない状態を指します。特に、生物学や海洋学で、太陽光が1%未満しか届かず光合成が行えない、深い湖や海の区域を表します。

The cave's aphotic depths harbored species found nowhere else on Earth.

洞窟の光の届かない深部には地球上の他の場所では見られない種が生息していた。

意味（1）

Having no light, especially no sunlight; specifically (biology, oceanography) describing that part of deep lakes and oceans where less than one per cent of sunlight penetrates and where photosynthesis is not possible.

As experiment has shown that light waves capable of effecting chemical changes do not penetrate the water deeper than 400 meters and as the other conditions of assimilation are met above this line, it is proposed to distinguish a diaphanic region including the land and the water to a depth of 400 m. and inhabited by assimilating organisms and an aphotic region including the ocean and lakes below the assimilation-line and the dark caves of the crust, where plant life is impossible.

more aphotic （ comparative ）

most aphotic （ superlative ）