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adj. thread·i·er, thread·i·est
1. Consisting of or resembling thread; filamentous.
2. Capable of forming or tending to form threads; viscid.
3. Medicine Weak and shallow. Used of a pulse.
4. Lacking fullness of tone; thin: a thready voice.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.