Definition of cercus in English:

cercus

nounPlural cerci ˈsəːkəsˈsərkəs

Zoology

Either of a pair of small appendages at the end of the abdomen of some insects and other arthropods.
〔动〕（某些昆虫和其他节肢动物的）尾须，尾铗，尾毛
Example sentencesExamples
- In L. forcipatus females the ovipositor valves reach the tips of the cerci; in L. disjunctus they do not.
- They have no eyes, antennae, or caudal cerci but have a telson tail, which is common in crustaceans but absent in other hexapods.
- By analogy with modern arthropods this zone was inferred to lie at the anterior of a terminal ventral body segment-the telosoma and the antenniform cerci of Olenoides serratus might be interpreted as belonging to that segment.
- These species are notable for the plesiomorphic retention of venation (albeit already quite reduced) in their tegmina, segmented cerci, and pentamerous tarsi.
- The cerci (tail appendages) begin to disarticulate.

Origin

Early 19th century: from modern Latin, from Greek kerkos 'tail'.

Definition of cercus in US English:

cercus

nounˈsərkəs

Zoology

A small appendage at the end of the abdomen of some insects and other arthropods, occurring in pairs.
〔动〕（某些昆虫和其他节肢动物的）尾须，尾铗，尾毛
Example sentencesExamples
- The cerci (tail appendages) begin to disarticulate.
- They have no eyes, antennae, or caudal cerci but have a telson tail, which is common in crustaceans but absent in other hexapods.
- In L. forcipatus females the ovipositor valves reach the tips of the cerci; in L. disjunctus they do not.
- These species are notable for the plesiomorphic retention of venation (albeit already quite reduced) in their tegmina, segmented cerci, and pentamerous tarsi.
- By analogy with modern arthropods this zone was inferred to lie at the anterior of a terminal ventral body segment-the telosoma and the antenniform cerci of Olenoides serratus might be interpreted as belonging to that segment.

Origin

Early 19th century: from modern Latin, from Greek kerkos ‘tail’.

词汇	cercus
释义	Definition of cercus in English: cercus nounPlural cerci ˈsəːkəsˈsərkəs Zoology Either of a pair of small appendages at the end of the abdomen of some insects and other arthropods. 〔动〕（某些昆虫和其他节肢动物的）尾须，尾铗，尾毛 Example sentencesExamples In L. forcipatus females the ovipositor valves reach the tips of the cerci; in L. disjunctus they do not. They have no eyes, antennae, or caudal cerci but have a telson tail, which is common in crustaceans but absent in other hexapods. By analogy with modern arthropods this zone was inferred to lie at the anterior of a terminal ventral body segment-the telosoma and the antenniform cerci of Olenoides serratus might be interpreted as belonging to that segment. These species are notable for the plesiomorphic retention of venation (albeit already quite reduced) in their tegmina, segmented cerci, and pentamerous tarsi. The cerci (tail appendages) begin to disarticulate. Origin Early 19th century: from modern Latin, from Greek kerkos 'tail'. Definition of cercus in US English: cercus nounˈsərkəs Zoology A small appendage at the end of the abdomen of some insects and other arthropods, occurring in pairs. 〔动〕（某些昆虫和其他节肢动物的）尾须，尾铗，尾毛 Example sentencesExamples The cerci (tail appendages) begin to disarticulate. They have no eyes, antennae, or caudal cerci but have a telson tail, which is common in crustaceans but absent in other hexapods. In L. forcipatus females the ovipositor valves reach the tips of the cerci; in L. disjunctus they do not. These species are notable for the plesiomorphic retention of venation (albeit already quite reduced) in their tegmina, segmented cerci, and pentamerous tarsi. By analogy with modern arthropods this zone was inferred to lie at the anterior of a terminal ventral body segment-the telosoma and the antenniform cerci of Olenoides serratus might be interpreted as belonging to that segment. Origin Early 19th century: from modern Latin, from Greek kerkos ‘tail’.
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