flattened \flattened\ adj.

1. shaped like a thin sheet.

Syn: planate. [WordNet 1.5 +PJC]

2. (Biol) flattened laterally along the whole length e.g. certain leafstalks or flatfishes.

Syn: compressed, flat. [WordNet 1.5]

Source: The Collaborative International Dictionary of English v.0.48
 

Flatten \Flat"ten\ (fl[a^]t"t'n), v. t. [imp. & p. p. Flattened; p. pr. & vb. n. Flattening.]

[From Flat, a.]

1. To reduce to an even surface or one approaching evenness; to make flat; to level; to make plane. [1913 Webster]

2. To throw down; to bring to the ground; to prostrate; hence, to depress; to deject; to dispirit. [1913 Webster]

3. To make vapid or insipid; to render stale. [1913 Webster]

4. (Mus.) To lower the pitch of; to cause to sound less sharp; to let fall from the pitch. [1913 Webster]

To flatten a sail (Naut.), to set it more nearly fore-and-aft of the vessel.

Flattening oven, in glass making, a heated chamber in which split glass cylinders are flattened for window glass. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

flattened adj : having been flattened [syn: planate]

Source: WordNet (r) 2.0
 

Flatten \Flat"ten\, v. t. [imp. & p. p. Flattened; p. pr. & vb. n. Flattening.]

[From Flat, a.]

1. To reduce to an even surface or one approaching evenness; to make flat; to level; to make plane.

2. To throw down; to bring to the ground; to prostrate; hence, to depress; to deject; to dispirit.

3. To make vapid or insipid; to render stale.

4. (Mus.) To lower the pitch of; to cause to sound less sharp; to let fall from the pitch.

To flatten a sail (Naut.), to set it more nearly fore-and-aft of the vessel.

Flattening oven, in glass making, a heated chamber in which split glass cylinders are flattened for window glass.

Source: Webster's Revised Unabridged Dictionary (1913)