soma
soma — noun
1. the part of a living thing that makes up its body and is distinct from the cells
the part of a living thing that makes up its body and is distinct from the cells that produce eggs or sperm
Dr. Folake explained that changes in the soma do not affect future generations.
contrast: soma vs germ line
The soma of a plant includes all its tissues except the cells that form seeds.
Dr. Nakamura irradiated the fruit flies' soma while shielding their germ cells, then bred them to check for inherited changes.
Christopher explained that grafting involves joining the somas of two different plants together.
- body
broader and everyday term; 'soma' is strictly technical and excludes germ cells
- somatic cells
the individual cells that make up the soma, often used interchangeably in biology texts
- germ line
the reproductive cells and their precursors, excluded from the soma
文法句型
the soma of + noun phrase
用法筆記
This sense appears mainly in genetics and evolutionary biology, where the distinction between the soma and the germ line is important for understanding how traits are inherited.
常見錯誤
2. the rounded central region inside a neuron, where the nucleus is located and fro
the rounded central region inside a neuron, where the nucleus is located and from which the rest of the cell receives its instructions for growth and activity
Under the microscope, Sofia traced each soma's outline and noted its position among the dendrites.
microscope: visualising the soma among dendrites
Reuben's research showed that damage to the soma affects how the entire neuron functions.
Mrs. Park used coloured markers on the board to show signals converging at the soma.
Lucía measured how the size of each soma changed after the nerve cells were stimulated.
- cell body
the common everyday term for the soma in neurobiology; fully interchangeable
- perikaryon
a more technical synonym used in advanced neuroscience; same meaning
文法句型
the soma of + noun phrase
用法筆記
The soma is one of the three main parts of a neuron, along with the dendrites (which receive signals) and the axon (which sends signals). In anatomy texts, 'cell body' is a common synonym.
常見錯誤
3. a plant-based liquid with mind-altering properties, offered to divine beings dur
a plant-based liquid with mind-altering properties, offered to divine beings during ancient Indian religious practices and described in Vedic texts as a source of spiritual power
The ancient hymns describe soma as a golden drink that gave warriors strength in battle.
register: Vedic ritual context
Priests prepared soma by crushing a mountain plant and mixing the juice with milk and water.
Mei sampled a recreated version of soma at the museum and noticed its bitter, milky taste.
Historians still argue about which plant was used to prepare the original soma for Vedic ceremonies.
文法句型
soma is + adjective + drink/liquid
用法筆記
The exact plant used to make soma is no longer known with certainty; scholars have suggested several candidates, including the fly agaric mushroom and various species of ephedra.