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peritrichous

Advanced (C1/C2)

IPA: /ˌpɛrɪˈtrɪkəs/

KK: /pɛrɪˈtrɪkəs/

adjective
Definition

Describing organisms that have a band of hair-like structures (cilia) around their body or mouth, often seen in certain types of protozoans and bacteria.


Example

The peritrichous protozoan uses its cilia to move and feed.


Conversation
Sloth A
Did you know there are bacteria that are peritrichous?
Sloth B
Really? What does that mean exactly?
Sloth A
It means they have flagella all over their surface, not just in one spot.
Sloth B
That’s so interesting! I love learning about tiny organisms.

Synonyms & Antonyms
Synonyms
cilial
flagellate
ciliated
Antonyms
aciliated
nonflagellate
bare
Root Explanation

Peritrichous → It is formed from "peri-" (meaning around) and "trichos" (from Greek, meaning hair). The word describes organisms that have hair-like structures distributed around their body.

Memory Tip

Think of 'peri-' meaning 'around' and 'trichos' meaning 'hair' — this helps you remember that 'peritrichous' refers to having hair-like structures all around.

Visually Confused Words
leiotrichous
hemitrichous
amphitrichous
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