n. flat or very gently sloping areas of the deep ocean basin floor. They are among the Earth's flattest and smoothest regions and the least explored.
Sea cucumbers and fish live in the abyssal plain.
1 syllables
VocabClass lessons are designed to engage students, improve motivation in learning the subject matter, and generate better results. Long-term retention is our focus and by making the learning process fun, our gamified approach has a positive impact on this goal.
View all games!