locus
locus — noun
1. a formal word for the place where a particular event, activity, or situation hap
a formal word for the place where a particular event, activity, or situation happens, or the main topic that attracts attention in a discussion.
The old market square became the locus of political protests during the summer.
the locus of + event (political protests)
For Karim, the family farm was the locus of all his childhood memories.
locus of + abstract noun (memories)
The new community centre will serve as a locus for local art exhibitions and workshops.
In the debate, the question of funding became the locus of the most heated arguments.
The garden was designed to be the central locus of the housing estate.
文法句型
the locus of [event/interest/activity]
a locus for [purpose]
用法筆記
More formal than place or location. Best used in academic writing, journalism, or analytical discussion rather than everyday conversation.
常見錯誤
2. in mathematics, a set of points or lines whose positions all satisfy a given rul
in mathematics, a set of points or lines whose positions all satisfy a given rule or condition, often forming a curve or a shape.
A circle is the locus of all points that lie at the same distance from a fixed centre.
locus of points + geometric condition
In geometry class, Kabir had to find the locus of a point moving in a parabola.
find the locus of [shape/curve]
Using a compass and ruler, Yael plotted the locus of points that form a parabola on her graph paper.
Dahlia drew the locus of points whose distance from two fixed points adds up to a constant.
- curve
a visual representation of a locus; less precise mathematically
- set of points
a more general descriptive phrase; locus is the standard technical term
文法句型
the locus of points [that/which + condition]
常見錯誤
3. the fixed address on a chromosome where a specific gene or DNA segment is locate
the fixed address on a chromosome where a specific gene or DNA segment is located, and where genetic information can be found or inherited.
Scientists identified the locus on chromosome 7 that is linked to the inherited disorder.
locus on [chromosome number] + associated with [condition]
Dr. Kwame pointed to the specific locus on chromosome 17 while explaining the BRCA1 test results to his patient.
locus on [chromosome] + medical explanation context
Mutations at a single locus can cause differences in flower colour among related plants.
Tariro mapped the locus of the gene responsible for drought resistance in wheat.
- site
a less technical term for a position on a chromosome
- location
a general word for a place; locus is the standard genetics term
- genetic marker
a locus used as a reference point in mapping; not all loci are markers
文法句型
the locus for [gene]
locus on [chromosome number]
用法筆記
In genetics papers, locus is often abbreviated as 'loci' (plural). The plural ending is pronounced 'loh-sai' or 'loh-see'.