Hypertext Webster Gateway: "hyporhachis"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Hyporhachis \Hy`po*rha"chis\, n.; pl. {Hyporhachides}. [NL., fr.
Gr. "ypo` beneath + ? spine.] (Zo["o]l.)
The stem of an aftershaft or hypoptilum. [Written also
{hyporachis}.]
Additional Hypertext Webster Gateway Lookup
Gateway by dict@stokkie.net
stock only wrote the gateway and does not have any control over the contents;
see the Webster Gateway FAQ,
and also the Back-end/database links and credits.