striation
striation — noun
- striationsingular
- striationsplural
1. a long narrow line or streak of colour that stands out from the surrounding surf
a long narrow line or streak of colour that stands out from the surrounding surface — for example, the light-coloured lines you might see on a dark mineral or on certain plant leaves
The polished stone showed thin golden striations running through its dark surface.
collocation: golden/white/dark + striations
Liang noticed faint white striations on the cliff wall near the old mine entrance.
Each striation on the beetle's shell shimmered with a slightly different blue hue.
The leaves had pale yellow striations spreading outward from their central veins.
文法句型
striation + of + colour
plural: striations
用法筆記
Often used in the plural form (striations) when describing visible patterns made up of multiple lines.
常見錯誤
2. a set of parallel narrow grooves or ridges cut into a surface, forming a repeati
a set of parallel narrow grooves or ridges cut into a surface, forming a repeating pattern that is studied as a whole — for instance, marks left by glacial movement on bedrock or by machining on a metal plate; this sense covers the overall arrangement, not individual scratches (sense 3) or colour streaks (sense 1)
The glacier left parallel striations across the entire surface of the exposed bedrock.
collocation: parallel striations
Faisal studied the fine striations on the cut metal under a bright desk lamp.
A pattern of dark striations covered the old wooden floor near the workshop bench.
Geologists use the direction of striations on rocks to map ancient ice flow paths.
文法句型
striation + of + noun
plural: striations
用法筆記
Common in geology to describe the parallel marks left on rock surfaces by glacial movement.
3. a single very fine groove or scratch on a surface, examined in isolation as a di
a single very fine groove or scratch on a surface, examined in isolation as a distinguishing feature — for example, the marks on a bullet casing used for forensic matching, or the thin lines visible in muscle tissue under a microscope; unlike sense 2, which describes the overall pattern of grooves across a broad area
The bullet's surface had microscopic striations that matched the suspect's weapon.
collocation: microscopic striations
Anjali examined the tiny striations on the microchip under a laboratory microscope.
Deep striations on the knife blade showed where it had scraped against rough stone.
The fine striations in the muscle tissue were visible only under high magnification.
文法句型
striation + on + surface
microscopic striations
用法筆記
Frequently used in forensic science (ballistics, tool marks) and biology (muscle tissue structure).