© 2026 Sloth Lingo. Learn easy. Lounge wisely.

deltoid

Intermediate (B1)

IPA: /ˈdɛl.tɔɪd/

KK: /ˈdɛl.tɔɪd/

adjective
Definition

Relating to a triangular shape or the deltoid muscle in the shoulder.


Example

The deltoid muscle is important for lifting the arm.


Conversation
Sloth A
I saw this new exercise that really targets the deltoid muscles.
Sloth B
Oh really? I could use some help with my shoulder workouts.
Sloth A
Yeah, it involves a lot of triangular movements to strengthen the deltoid.
Sloth B
That sounds interesting! I should give it a try.

Synonyms & Antonyms
Synonyms
triangular
angular
shaped
Antonyms
circular
flat
linear
noun
Definition

A large triangular muscle that is located on the outer part of the shoulder and helps to lift the arm away from the body.


Example

The deltoid muscle is important for lifting objects overhead.


Conversation
Sloth A
I started working out my shoulders recently, and I can really feel my deltoid muscle getting stronger.
Sloth B
That's awesome! Strengthening your deltoid is great for overall shoulder stability.
Sloth A
Yeah, I've been focusing on some specific exercises to target it more effectively.
Sloth B
Root Explanation

Deltoid → It is derived from the Greek word "delta" ("δ"), which refers to the fourth letter of the Greek alphabet shaped like a triangle, and the suffix "-oid" (meaning resembling or like). The term "deltoid" describes a muscle that is triangular in shape, resembling the letter delta.

Memory Tip

Imagine a triangle, like the letter 'delta' in Greek, to remember that 'deltoid' refers to a muscle shaped like a triangle.

Visually Confused Words
obdeltoid
dentoid
subdeltoid
speltoid
elytroid
bdelloid
adultoid
Is this page helpful?
Keep it up! A strong deltoid will help with all sorts of activities.

Synonyms & Antonyms
Synonyms
muscle
triangular
shoulder
Antonyms
none