A sharp appendage to any of a plant; a thorn.
A rigid and sharp projection upon any part of an animal.
n. (ME, thorn, spinal column, fr. L. spinsa, thorn, spine, spinal column) a stiff sharp-pointed plant process as a modified leaf, leaf part, petiole, or stipule.
A modified leaf which is used for protection and shading.
a stem of leaf modified for protection.
Latin spina = a thorn; hence, a sharp process, or a lay term for the vertebral column; adjective, spinous, spinal.
A sharp-pointed wood body, commonly a modified branch or stipule.
Sharp pointed woody structure; modified leaf or stipule.
The stiffness of an arrow shaft, measured by placing the shaft horizontally between two points 28 inches apart and hanging a two pound weight from the centre. The spine is the deflection (in inches) at this central point.
a thorn-like outgrowth of the integument, usually associated with the leg segments
an unbranched, relatively stiff fin support structure, may be located in any fin, but anterior to any rays in that fin.
fin support that is not segmented, often sharp, never branched, but sometimes flexible (e.g in sculpins)
Reduced, sharp-pointed leaf or stipule, or sharp-pointed marginal tooth.
This is another name for the vertebral column in vertebrates and for any sharp thin appendage on a plant or animal. Spines are often used as a defence; cacti have spines all over their stems (the spines are actually reduced leaves) to deter grazers from eating them. Many fish and insects also have spines on their bodies to make any predator think twice about eating or attacking them.
Sharp-pointed petiole, midrib, vein, or stipule.
A leaf or leaf part which has been modified to serve in protection, and to reduce water loss.
pointed outgrowth which is stiff and sharp-pointed
A stiff, slender, sharp-pointed structure representing a modified leaf or stipule. [HJ
a sharp-pointed outgrowth from a stem, leaf, or fruit
a stout, stiff, narrow outgrowth (with basal “boss”) of body or limb surface
a fin ray which is not branched, is without obvious segments, and is more or less stiffened and sharpened at the apex; used also in reference to skin spines on skates
A measurement of bow stiffness.
The measure of an arrows flexibility.
a sharp-pointed tip on a stem or leaf
a sharp rigid animal process or appendage; as a porcupine quill or a ridge on a bone or a ray of a fish fin
The measured ability of an arrow to bend. A heavier bow will require a stiffer spine and vice versa.
The strenght and stiffness of an arrow.
One name given to a point on a shaft in which it exhibits uniform bending properties in relation to the target.
The arrow's resistance to bending, classified by hanging a 2 lb. weight at the centre of an arrow resting on two supporting points 26" apart, and measuring the amount of the bend.
A single, median supporting element of a fin, usually stiff. Distinguished from a ray in that it is single, median, never branched or jointed.
sharp, needle-like modification of a leaf
A sharp projecting point; if referring to fins, a stiff unsegmented, undivided and unbranched element supporting a fin. ( 126)
a sharp, woody or rigid outgrowth from a stem; sometimes a modified leaf or stipule; sometimes same as thorn.
fin rays that are not branched, and are usually stiff and sharp.
a small, sharp-pointed projection from a bone
a stiff, sharp-pointed structure, formed by modification of a plant organ, e.g. a lateral branch or a stipule.
In botany, “spine” is a sharp, modified leaf or leaf part that functions as a mechanical defense, as in cactus and barberry. In popular use, the term often used is “thorn.
a sharp, pointed, modified leaf found in areoles of cacti.
a prickly, woody outgrowth from a stem; a thorn.
Or "Effective Spine" is an effect created by several manufacturing anomalies. The result is that the rod blank will favor bending along a particular axis when load is applied.
leaf or stipule that is rigid and sharp instead of foliaceous; Since it is a leaf or leaf part (stipule), it is located below a lateral bud or branch stem
A term that describes the stiffness of an arrow shaft and tells the shooter if the shaft is strong enough to be shot in a bow of known poundage. Too light of a spine can cause accidents when the shaft breaks.
the vertebral column; a short, sharp, thorn-like process of bone.
A sharp, rigid, outgrowth, usually from the stem.
Refers to the strength of the arrow shat and its ability to resist bending and to recover after bending or experiencing archer's paradox.
A spine is a sharp, modified leaf, scale, or stipule. Cacti have spines.
Spines are the ends of branches or leafs, that have been modified into rounded, hard structures with sharp ends. They are often also called thorns, which are reduced, sharp pointed stems.