octopus

«octopus» in Mova's school dictionary: A sea animal with a soft, round body and eight long arms… — its meaning for a pupil, its sense in the lessons and examples, with 5 sentences of Mova's corpora that use it.

part of speech

noun (an octopus, octopuses / octopi)

meaning for a pupil

A sea animal with a soft, round body and eight long arms covered in suckers. tree →

sense in the lessons

In science: octopuses are molluscs without a shell; they are very clever, can change colour and shape to hide (camouflage), squirt ink to escape, and have three hearts and blue blood. In maths: «octo» means eight, like an octagon. Phrases: «octopus arms/tentacles», «octopus ink».

examples

• An octopus has eight arms. tree →
• The octopus squirted ink and swam away. tree →
• Octopuses can change colour to hide. tree →
• We saw an octopus at the aquarium. tree →
• An octopus has three hearts. tree →
• The octopus squeezed through a tiny hole. tree →
• Octo means eight, so an octopus has eight arms and an octagon has eight sides. tree →

note

«An octopus». Plural: octopuses is the most common; octopi is also used but less correct (the word is Greek, not Latin); octopodes is rare. Scientists call the arms «arms», not «tentacles».

In the corpora

• An octopus really has three hearts; some surprising facts are true.
• A squid has 8 arms and 2 longer tentacles, and like an octopus it has 3 hearts.
• The octopus's body heart stops while it swims, so swimming tires it quickly, and octopuses mostly crawl over the rocks instead.
• Octopuses can solve puzzles, open jars, learn by watching and remember people; wild ones carry coconut shell halves to hide in.
• An octopus has eight arms with suckers all along them, and scientists call them arms, not tentacles.

Trees and pragmatics

Every meaning and example of «octopus» parsed by Mova, each sentence with its dependency tree and frames.