a) Resembling or relating to seaweeds of the genus Fucus.

The first cell division in zygotes of the fucoid brown alga Pelvetia compressa is asymmetric ...

b) Of sandstone: containing seaweed-like markings.

The Fucoid beds are quite variable in appearance in composition...The rock unit got its name from the early belief that these markings were the compressed remains of seaweeds (fucoids). Now it is thought that they are the trails left by feeding creatures on the sea floor.

2. noun
A fucoid seaweed.

Among a number of unidentified specimens...was one of an unusually well-defined, almost perfect frond of a fucoid.

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Look at other dictionaries:

  • Fucoid — Fu coid, a. [Fucus + oid.] (Bot.) (a) Properly, belonging to an order of alga: ({Fucoide[ae]}) which are blackish in color, and produce o[ o]spores which are not fertilized until they have escaped from the conceptacle. The common rockweeds and… …   The Collaborative International Dictionary of English

  • Fucoid — Fu coid, n. (Bot.) A plant, whether recent or fossil, which resembles a seaweed. See {Fucoid}, a. [1913 Webster] …   The Collaborative International Dictionary of English

  • fucoid — [fyo͞o′koid΄] adj. [< FUCUS + OID] of or like seaweed, esp. rockweed n. a seaweed; esp., rockweed …   English World dictionary

  • fucoid — I. adjective Etymology: New Latin Fucus, from Latin Date: 1839 relating to or resembling the rockweeds II. noun Date: circa 1841 a fucoid seaweed or fossil …   New Collegiate Dictionary

  • fucoid — /fyooh koyd/, adj. 1. resembling or related to seaweeds of the genus Fucus. n. 2. a fucoid seaweed. [1830 40; FUC(US) + OID] * * * …   Universalium

  • fucoid — fu•coid [[t]ˈfyu kɔɪd[/t]] adj. 1) mcr resembling or related to seaweeds of the genus Fucus[/ex] 2) mcr a fucoid seaweed • Etymology: 1830–40 …   From formal English to slang

  • fucoid — /ˈfjukɔɪd/ (say fyoohkoyd) adjective 1. resembling, or allied to, seaweeds of the genus Fucus. See fucus. –noun 2. a fucoid seaweed. {fuc(us) + oid} …   Australian English dictionary

  • fucoid — noun 1. a fossilized cast or impression of algae of the order Fucales • Hypernyms: ↑fossil • Member Holonyms: ↑Fucales, ↑order Fucales 2. any of various algae of the family Fucaceae • Syn: ↑fucoid algae …   Useful english dictionary

  • fucoid — shaped like seaweed Shapes and Resemblance …   Phrontistery dictionary

  • fucoid — fu·coid …   English syllables

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