Pronunciation: [spˈɪnjuːl] (IPA) 
The word "spinule" is spelled as /spɪnjuːl/. The "s" at the beginning is pronounced as "s", followed by "p" which is pronounced as "p", then "i" which is pronounced as "ɪ", "n" as "n", "u" as "juː", "l" as "l". The word is defined as a small thorn or spine. It comes from the Latin word "spinula", which means "a small spine". Spinules are commonly found in plants and animals, especially in the fins or scales of some fish species.
A spinule refers to a small spine or thorn-like projection that is found on various organisms, typically plants or certain animal species. These tiny structures are often short and slender, resembling tiny needles or bristles. Spinules can be found in different parts of an organism, such as the leaves, stems, or even on the surface of an insect.
In plants, spinules are commonly found on the edges of leaves, where they serve multiple purposes. They can act as a defense mechanism against herbivores by making the plant more difficult to consume. Additionally, spinules can aid in reducing water loss by creating a barrier of air around the leaf's surface. This helps to prevent excessive evaporation and maintain the plant's hydration.
In certain animal species, spinules can be observed on the exoskeleton or outer body surface. These structures serve various functions depending on the organism. For example, spinules on certain insects may play a role in camouflage, helping them blend into their environment. In other cases, spinules may assist in locomotion or provide structural support.
Overall, spinules can be seen as small, protruding structures that play a diverse array of roles in different organisms. From defense mechanisms and water conservation in plants to camouflage and structural support in animals, spinules contribute to the diverse adaptations found within the natural world.
A minute spine.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word 'spinule' is derived from the Latin word 'spīnula', which means "little spine" or "thorn". The Latin word 'spīna' means "thorn" or "prickle" and is also the source of the English word 'spine'. 'Spinule' refers to a small, slender spine or prickle.
