acies-, aci- +

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. An needle-shaped part, as of a plant or crystal.

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.

In hydrology, freshwater ice containing air bubbles and having many long, needlelike crystals and hollow tubes in a layered arrangement.; fibrous ice, satin ice.

1. Marked or striated with scratches or having such an appearance.
2. Shaped like a needle; acicular.

1. Marked or striated with scratches or having such an appearance.
2. Shaped like a needle; acicular.
3. Furnished or clothed with aciculae; marked as with needle-scratches.

Needle-shaped.

An evergreen and deciduous needle-leaved vegetation.

Sharp and pointed like a needle.

In mineralogy, needle ore: acicular bismuth; a sulphide of bismuth, lead, and copper occuring in acicular crystals.

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.

To convert into steel; literally, "point of iron".

1. Battle array, the front of an army line of battle; from Roman antiquity.
2. The keen attention or aim, of the eye, ear, etc. when fully directed towards any object.

Needle-shaped or in the form of a needle.