Etymology
Advertisement
tendon (n.)
1540s, from Medieval Latin tendonem (nominative tendo), altered (by influence of Latin tendere "to stretch") from Late Latin tenon, from Greek tenon (genitive tenontos) "tendon, sinew," from PIE *ten-on- "something stretched," from root *ten- "to stretch."
Related entries & more 
Advertisement
hock (n.1)
"joint in the hind leg of a horse or other quadruped," corresponding to the ankle-joint in man, mid-15c., earlier hockshin (late 14c.), from Old English hohsinu "sinew of the heel, Achilles' tendon," literally "heel sinew," from Old English hoh "heel" (in compounds, such as hohfot "heel"), from Proto-Germanic *hanhaz (source also of German Hachse "hock," Old English hæla "heel"), from PIE *kenk- (3) "heel, bend of the knee" (see heel (n.1)).
Related entries & more 
aponeurosis (n.)
"fascia, fascia-like tendon, white fibrous membrane of the body (often connecting a muscle with a tendon)," 1670s, from Latin, from Greek aponeurosis, from aponeuroein, from apo "change into" (see apo-) + neuron "sinew" (see neuro-).
Related entries & more 
tendinitis (n.)
1900, from Medieval Latin tendinis, genitive of tendo (see tendon) + -itis "inflammation."
Related entries & more 
filipendulous (adj.)
"hanging by a thread," 1864, as if from Latin filum "thread" (from PIE root *gwhi- "thread, tendon") + pendulus "hanging down" (see pendulous).
Related entries & more 
Advertisement
hamstring (n.)
"tendon at the back of the knee," 1560s, from ham "bend of the knee" (see ham (n.1)) + string (n.).
Related entries & more 
myrmidon (n.)

one of a warlike people of ancient Thessaly, legendarily ruled by Achilles and accompanying him to Troy, c. 1400, from Latin Myrmidones (plural), from Greek Myrmidones, Thessalian tribe led by Achilles to the Trojan War, fabled to have been ants changed into men, and often derived from Greek myrmex "ant" (from PIE *morwi- (see Formica (2)), but Watkins does not connect them and Klein's sources suggest a connection to Greek mormos "dread, terror." Transferred sense of "faithful unquestioning follower," often with a suggestion of unscrupulousness, is from c. 1600.

Related entries & more 
heel (n.1)

"back of the foot," Old English hela, from Proto-Germanic *hanhilon (source also of Old Norse hæll, Old Frisian hel, Dutch hiel), from PIE *kenk- (3) "heel, bend of the knee" (source also of Old English hoh "hock").

Meaning "back of a shoe or boot" is c. 1400. Down at heels (1732) refers to heels of boots or shoes worn down and the owner too poor to replace them. For Achilles' heel "only vulnerable spot" see Achilles. To fight with (one's) heels (fighten with heles) in Middle English meant "to run away."

Related entries & more 
filigree (n.)
1690s, shortening of filigreen (1660s), from French filigrane "filigree" (17c.), from Italian filigrana, from Latin filum "thread, wire" (from PIE root *gwhi- "thread, tendon") + granum "grain" (from PIE root *gre-no- "grain"). Related: Filigreed.
Related entries & more 
nervose (adj.)

"having nerves," in any sense, 1753, from Latin nervosus "full of sinews or fibers," from nervus "sinew, tendon" (see nerve (n.)).

Related entries & more