1. abyssal - Adjective
2. abyssal - Adjective Satellite
Belonging to, or resembling, an abyss; unfathomable.
Source: Webster's dictionarythe abyssal depths of the ocean Source: Internet
Even at abyssal depths, where no light penetrates, synchronisation of reproductive activity in echinoderms is surprisingly frequent. citation Some echinoderms brood their eggs. Source: Internet
Ultimately, the shelf drops into the Bay of Biscay on the north (an abyss), the Iberian abyssal plain at convert on the west and Tagus abyssal plain to the south. Source: Internet
I felt a bit like Jonah; lost at sea, staring into the giant, abyssal maw of a strange beast. Source: Internet
With pre-COVID-19 statistics indicating around out of school children, countless ghost schools, and an abyssal literacy rate, the closure of schools and postponement of examinations are significant disruptions. Source: Internet