Translation guide
A part that sticks out from a surface or main body. In Japanese, the most common word is 突起 (tokki), but the best choice depends on shape, size, and context.
A part that sticks out from a surface or main body, regardless of shape or size.
The most general and common word for any projecting part. Used in technical, everyday, and descriptive contexts.
この機械には小さな突起がたくさんある。
This machine has many small projecting parts.
壁の突起に注意してください。
Please be careful of the projecting part on the wall.
Literally 'protruding part'. Slightly more formal and often used in technical descriptions or manuals.
設計図には突出部の寸法が記されている。
The dimensions of the projecting part are noted on the blueprint.
A small, sharp, or pointed projecting part, like a spike or prong.
Casual, everyday word for something sticking out. Often used for small bumps or protrusions.
机の角の出っ張りにぶつかった。
I bumped into the projecting part of the desk corner.
Specifically a thorn, splinter, or spine-like projection. Used for natural or sharp projections.
A projecting part that is long and thin, like a rod, antenna, or horn.
A projecting object, often used for antennae, horns, or other elongated protrusions.
昆虫の頭部には細長い突起物がある。
The insect's head has a long, slender projecting part.
Specifically a horn or antler-like projection. Used for animals or horn-shaped objects.
A rounded or irregular projection on an otherwise flat surface.
A swelling or raised part, often used in geology, anatomy, or for bumps on a surface.
地面に小さな隆起がある。
There is a small projecting part (bump) on the ground.
A lump or bump, often used for knots in wood, bumps on the body, or protrusions on objects.
突起 is the standard, neutral term suitable for most situations. 出っ張り is more casual and often implies something that sticks out inconveniently or noticeably.
この突起は何のためにあるのですか？
What is this projecting part for?
その出っ張りに気をつけて。
Watch out for that projecting part.
The phrase 'projecting part' is not a single fixed word in Japanese. Translating it literally as 投影部分 or 計画部分 would be incorrect. Always choose a word based on the specific shape and context.
Rose stems have projecting parts (thorns).
That animal has large projecting parts (horns).
There is a projecting part (knot) on the tree trunk.