concretion
concretion — noun
1. a hard lump made when separate material slowly gathers and sticks together into
a hard lump made when separate material slowly gathers and sticks together into one piece.
During the experiment, a white concretion formed at the bottom of the jar.
pattern: a concretion formed at the bottom of [container]
The plumber broke apart a greasy concretion blocking the old kitchen pipe.
collocation: break apart a concretion blocking a pipe
Workers found a chalky concretion stuck to the inside of the water tank.
After years underground, the sand and clay hardened into a single concretion.
The museum displayed a riverbed concretion beside shells and fossil fragments.
文法句型
a concretion forms
a concretion in + place
用法筆記
Usually used in scientific, historical, or technical description. It often refers to matter that hardens inside equipment, soil, or sediment rather than an ordinary soft lump.
常見錯誤
2. a stone-like lump that develops inside the body, for example in the kidney or ga
a stone-like lump that develops inside the body, for example in the kidney or gallbladder.
The scan showed a small concretion in Leo's kidney.
pattern: a concretion in [body part]
Doctors removed the concretion after it blocked Samir's bile duct.
collocation: remove a concretion after blockage
A painful concretion near Noa's bladder made walking hard.
The nurse explained that the concretion had formed from mineral salts.
Arjun drank more water to help prevent another concretion from forming.
文法句型
a concretion in + body part
remove a concretion
用法筆記
Medical writing often uses more specific names such as kidney stone or gallstone. This sense is narrower than sense 1 because it refers only to a hard mass that forms inside the body.
常見錯誤
3. a rounded piece of mineral material inside rock that is made of different matter
a rounded piece of mineral material inside rock that is made of different matter from the rock around it.
The geologist split the rock and pointed to a round concretion inside.
pattern: split the rock and point to a concretion
Students passed around a dark concretion from the cliff near Hualien.
context: field study sample from a cliff
Rain washed away the soft soil, leaving a hard concretion exposed.
The fossil hunter mistook the concretion for an egg-shaped bone.
In the museum drawer, each concretion was labeled with its rock layer.
- nodule
closest technical match; often used for a small rounded mineral lump
- mineral mass
descriptive phrase rather than a fixed geological term
- deposit
broader term that does not specifically suggest a rounded lump in rock
文法句型
a concretion in rock
split open a concretion
用法筆記
Used in geology. Unlike sense 1, this sense usually names a naturally enclosed lump inside rock, often studied after the rock is split open.
4. the process in which loose material comes together and becomes a tighter, more s
the process in which loose material comes together and becomes a tighter, more solid mass.
Heat and pressure speed up the concretion of wet mud.
pattern: the concretion of [material]
The report describes the concretion of ash into a solid crust.
pattern: concretion of [material] into [result]
Scientists tracked the concretion of minerals around the buried shell.
Slow concretion turned the loose sand into a firm layer.
The cave walls showed signs of concretion after years of dripping water.
- solidification
broader term for becoming solid, whether or not separate matter gathers together
- compaction
focuses on pressing material closer together
- aggregation
stresses pieces gathering into a group, not always hardening
文法句型
the concretion of + substance
concretion into + result
用法筆記
Mostly used in technical explanation, especially with 'of' phrases such as 'the concretion of minerals'. It names the process, not the finished lump described in senses 1 to 3.