needle-shaped

/'ni:dlʃeipt/

Thân thiện

The pine tree has many needle-shaped leaves.

Definition

1. Adjective:
   • Narrow, long, and pointed: Having a very slender, elongated form that tapers to a sharp point, resembling a sewing needle or a pine leaf.

Examples of Usage

• Adjective:
  • The cactus has needle-shaped spines to protect itself.
  • Pine trees are easily identified by their needle-shaped leaves.
  • Under the microscope, the crystal structure appeared needle-shaped.

Advanced Usage

• In Botany: Commonly used to describe the leaves of coniferous trees (e.g., pines, firs, spruces) which are adapted to reduce water loss.
  • The forest floor was covered with fallen, needle-shaped leaves.
• In Geology/Crystallography: Used to describe mineral crystals that form in long, thin, pointed structures.
  • The geode contained beautiful, needle-shaped quartz crystals.

Variants and Related Words

• Acicular (adj): A more technical synonym, often used in scientific contexts (e.g., biology, mineralogy) to describe a needle-like shape.
  • The sample contained acicular crystals of rutile.
• Needle-like (adj): A more common, descriptive compound with the same meaning.
  • The insect has needle-like mouthparts.

Synonyms

• Pointed: Having a sharp end.
• Tapering: Becoming gradually narrower toward one end.
• Lanceolate: (Botany) Shaped like a lance head; broader at the base and tapering to a point (similar, but often wider than needle-shaped).

Related Phrases/Compounds

• Needle-shaped leaf: The specific botanical term for this leaf type.
  • Conifers typically have needle-shaped leaves.

Học thuật

Adjective

1. narrow and long and pointed; as pine leaves

Từ đồng nghĩa

• acerate
• acerose
• acicular