acuto-, acut-, acuti-, acu-, -cusis; also, agu-

(Latin: sharp, to sharpen, point; needle, pin)

acicula (s) (noun), aciculae (pl)
1. A technical name for a slender needle-like body; such as, the spines or prickles with which some animals and plants are furnished, or the needle-like crystals of certain minerals.
2. A needle-shaped part, as of a plant or crystal.
acicular (adjective), more acicular, most acicular
1. Needle-like; resembling a slender needle or bristle, as the leaves of pine-trees, and various crystals.
2. When referring to cast iron: containing ferrite in a needlelike form; or an alloy having a microstructure of needlelike components.
acicular ice (s) (noun), acicular ices (pl)
In hydrology, freshwater ice containing air bubbles and having many long, needlelike crystals and hollow tubes in a layered arrangement.; fibrous ice, satin ice.
aciculate (verb), aciculates; aciculated; aciculating
1. To mark or to striate with scratches or making such an appearance.
2.To shape like a needle.
aciculate (adjective), more aciculate, most aciculate
1. Marked or striated with scratches or having such an appearance.
2. Shaped like a needle.
aciculiform (adjective), more aciculiform, most aciculiform
Needle-shaped: "The aciculiform stem was slender like a needle or a bristle."
aciculilignosa
An evergreen and deciduous needle-leaved vegetation.
aciculine (adjective)
Sharp and pointed like a needle.
aciculite (s), aciculites (pl) (nouns)
In mineralogy, needle ore: "The aciculite is a metallic element that is a silver-white, reddish-tinged, brittle metallic element; such as, lead and copper as seen in acicular or needle-shaped crystals."
aciculum (s), acicula (pl) (nouns)
1. A needle-like spine or bristle, as is present in certain types of worms or flagellates.
2. A projecting cluster of bristles or setae found in certain annelid worms or a fingerlike or handlike bristle seen in certain flagellate protozoa.
3. In zoology, one of the slender, sharp stylets embedded in the parapodia of certain annelid worms, as the polychaetes.
4. A technical name for a slender needle-like body; such as, the spines or prickles with which some animals and plants are furnished, or the needle-like crystals of certain minerals.
acuate
Needle shaped, sharp-pointed.
acuation
Sharpening, rendering acute.
acuclosure
Hemostasis achieved by the placement of needles.
acufilopressure
The combined use of acupression and ligation to control bleeding.
acuition
The act of sharpening.

Cross references of word families that are related directly, or indirectly, to: "sour, sharp": acerb-; aceto-; acid-; acies- (not "sour"); oxy-; pung- (not "sour").