The English word for octopus is "octopus", pronounced /?kt?p?s/.

Origin of the word:

The word "octopus" is derived from Ancient Greek, and consists of two parts: "octo" means "eight", and "pus" means "foot" or "foot". This is because one of the characteristics of octopuses is that they have eight tentacles or feet.

Word Usage:

"Octopus" is a countable noun, which means an aquatic animal belonging to the class Cephalopoda. Octopuses have soft bodies, conical heads, and long, suction-cupped tentacles. They are very intellectual creatures with excellent intelligence and adaptability.

Three words example sentences:

1. I saw a beautiful octopus while diving in the ocean.

2, The octopus camouflages itself by changing color to blend in with its surroundings. (The octopus camouflages itself by changing the color of its body to blend in with its surroundings.)

3. The octopus used its tentacles to catch its prey.

Four, expanding knowledge:

The octopus is a very intelligent and flexible group of creatures with excellent predatory skills and escape ability. Their tentacles allow for active exploration and a variety of fine manipulation, such as opening shells, catching prey and hiding themselves. Octopus color changes are regulated by pigments within their cells. They can change the size, shape and layout of their pigment cells to mimic the colors and textures of their surroundings.

Octopuses usually feed on crustaceans, small fish and other invertebrates. They use powerful jets to eject water, creating thrust to quickly grab prey. Octopuses have three hearts, two of which are used to supply blood to their three pairs of gills, while the other heart pumps blood to other parts of the body.

V. Summary:

"Octopus" is an English word for octopus, which is derived from the ancient Greek word meaning "eight-legged animal". Octopuses are highly intelligent aquatic animals known for their flexible tentacles, excellent feeding skills and ability to change colors. Knowing the meaning, pronunciation, and usage of this word will help us better understand and communicate about octopuses.