derm

US: (dûrm)

WordReference Random House Unabridged Dictionary of American English © 2025

derm  (dûrm), n. 

1. Nautical, Naval Terms a navigational device for making a nearby object conspicuous on a radarscope.

• d(elayed) e(cho) r(adar) m(arker)

derm-, 

1. var. of dermato- before a vowel:
   dermoid.

-derm, 

1. var. of -dermatous, usually with nouns (melanoderm;
   pachyderm), or var. of -dermis (blastoderm;
   ectoderm;
   mesoderm).

• Greek -dermos
• -dermis -dermis); or directly
• Greek -dermos -skinned, adjective, adjectival derivative of dérma skin; or
• French -derme (
• probably

WordReference Random House Learner's Dictionary of American English © 2025

-derm-, root. 

1. -derm- comes from Greek, where it has the meaning "skin.'' This meaning is found in such words as: dermatitis, dermatology, dermis, hypodermic, pachyderm, taxidermy.

WordReference Random House Unabridged Dictionary of American English © 2025

dermato-, 

1. a combining form meaning "skin,'' used in the formation of compound words:
   dermatology.

Also, dermo-. Also,[esp. before a vowel,] derm-, dermat-. 

• Greek, combining form of dermat-, stem of dérma

Collins Concise English Dictionary © HarperCollins Publishers::

-derm combining_form:in_noun:countable

1. indicating skin: endoderm

Etymology: via French from Greek derma skin

Collins Concise English Dictionary © HarperCollins Publishers::

dermato-, derma-(before a vowel)dermat-, derm- combining_form

1. indicating skin: dermatology, dermatome, dermal, dermatitis

Etymology: from Greek derma skin