Definition

Noun: * The flat, expanded part of a leaf: The "leaf blade" is the broad, typically flat, green portion of a leaf. It is the main site for photosynthesis and is distinct from the leaf's stalk (petiole). This term is especially used for the leaves of grasses and similar plants.

Usage

The term "leaf blade" is used to specifically refer to the photosynthetic surface of a leaf, separating it from its supporting structures. * It is a standard term in botany and plant biology. * It is often used when describing, comparing, or identifying plants.

Examples

• The leaf blade of the maple tree turns a brilliant red in autumn.
• To identify the grass species, examine the width and venation of the leaf blade.
• The insect was feeding on the soft tissue of the leaf blade, avoiding the tougher veins.

Advanced Usage

• Lamina: This is a precise scientific synonym for "leaf blade."
  • The lamina was covered in fine hairs.
• When describing leaf morphology, the blade's characteristics (shape, margin, texture) are key diagnostic features.

Variants and Related Words

• Blade: In a botanical context, "blade" can be used alone as a shortened form of "leaf blade."
  • The blade of the iris leaf is sword-shaped.
• Lamina (n.): The technical term for the leaf blade.

Synonyms

• Lamina
• Blade (in botanical context)

Antonyms / Contrasting Terms

• Petiole: The stalk that attaches the leaf blade to the stem.
• Sheath: A tubular structure enclosing the stem, found at the base of leaves in grasses and some other plants.

Noun

1. especially a leaf of grass or the broad portion of a leaf as distinct from the petiole