geotacticadj.

Brit.

/ˌdʒiːə(ʊ)ˈtaktɪk/, U.S.

/ˌdʒioʊˈtæktɪk/

Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: geo- comb. form, -tactic comb. form.

Etymology: < geo- comb. form + -tactic comb. form, after German geotaktisch (B. Frank 1884, in Berichte der Deutsch. Bot. Gesellsch. 2 152; itself after Geotaxis geotaxis n.).

Biology.

Of the nature of geotaxis; exhibiting or characterized by geotaxis.

ΚΠ

1893 Bot. Gaz. 18 437 Jensen finds that Euglena viridis and Chlamydomonas pulvisculus show distinct geotropism, though usually the geotactic movements are overpowered by the directive influence of light, heat and chemical agents.

1908 C. B. Davenport Exper. Morphol. v. 117 On warm days the typical geotactic phenomena are often absent.

1964 Oceanogr. & Marine Biol. 2 476 The marked geotactic orientation of lamellibranch molluscs is well known.

2006 R. R. H. Anholt Dazzle 'Em with Style iii. 103 The student brought with her the behavioral apparatus, a plexiglas geotactic maze, which she used effectively to explain to the audience how she measured geotactic behavior.

This entry has been updated (OED Third Edition, March 2012; most recently modified version published online March 2022).

单词	geotactic
释义	geotacticadj. Brit. /ˌdʒiːə(ʊ)ˈtaktɪk/, U.S. /ˌdʒioʊˈtæktɪk/ Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: geo- comb. form, -tactic comb. form. Etymology: < geo- comb. form + -tactic comb. form, after German geotaktisch (B. Frank 1884, in Berichte der Deutsch. Bot. Gesellsch. 2 152; itself after Geotaxis geotaxis n.). Biology. Of the nature of geotaxis; exhibiting or characterized by geotaxis. ΚΠ 1893 Bot. Gaz. 18 437 Jensen finds that Euglena viridis and Chlamydomonas pulvisculus show distinct geotropism, though usually the geotactic movements are overpowered by the directive influence of light, heat and chemical agents. 1908 C. B. Davenport Exper. Morphol. v. 117 On warm days the typical geotactic phenomena are often absent. 1964 Oceanogr. & Marine Biol. 2 476 The marked geotactic orientation of lamellibranch molluscs is well known. 2006 R. R. H. Anholt Dazzle 'Em with Style iii. 103 The student brought with her the behavioral apparatus, a plexiglas geotactic maze, which she used effectively to explain to the audience how she measured geotactic behavior. This entry has been updated (OED Third Edition, March 2012; most recently modified version published online March 2022). < adj.1893
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