retarder

From retard +‎ -er.

retarder (plural retarders)

1. Something which retards or slows.

   Synonyms: bottleneck, inhibitor, retardant, limiter

   Antonyms: accelerant, promoter, quickener

   The substance acted as a retarder to the chemical reaction because it radically changed the pH.

   • 1999, Dale Crane, Fast-Track Test Guides for Aviation Maintenance: Airframe, page 147:

     Why is retarder used in dope when the dope is being sprayed in humid conditions? The retarder slows the drying of the dope and keeps it from blushing.

3. (mechanical engineering) A device for slowing down large trucks, lorries, buses, shunted railway wagons.
   • 1961 April, G. Freeman Allen, “The "Rheingold" goes via Cologne”, in Trains Illustrated, page 237:

     [...] unlike the latest British yards, Gremberg has only primary retarders, manually operated, a method that the hump operators apparently prefer to electro-pneumatic control because they can grade the braking pressure more accurately by feel.

4. (baking) A refrigerator used to slow down proofing of yeast when making dough.

• vapor retarder

•   Retarder (chemistry) on Wikipedia.Wikipedia
•   Retarder (mechanical engineering) on Wikipedia.Wikipedia
•   Retarder (railroad) on Wikipedia.Wikipedia

• retarred

Inherited from Latin retardāre.

• IPA^(key): /ʁə.taʁ.de/
• Homophones: retardai, retardé, retardée, retardées, retardés, retardez

• Audio:

  (file)

retarder

1. to retard, slow down

   Sa bêtise nous a énormément retardé. ― His stupidity greatly slowed us down.

2. to postpone, put back

• retardataire
• retardateur
• retardé
• retardement

• “retarder”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

retarder

1. first-person singular present passive subjunctive of retardō

• IPA^(key): /rəˈtɑːrər/

• Audio:

  (file)

• Rhymes: -ər
• Hyphenation: re‧tard‧er

retarder m

1. indefinite plural of retard

• traderer

Borrowed from Latin retardō.

retarder

1. (transitive) to retard; to delay; to make late
   • li qel paiement par la dite encheson ad esté uncore retardez, Bretigny 28.18

     The aforementioned payment by the same occasion has again been delayed

This verb conjugates as a first-group verb ending in -er. The forms that would normally end in *-d, *-ds, *-dt are modified to t, z, t. Old French conjugation varies significantly by date and by region. The following conjugation should be treated as a guide.

• → English: retard
• French: retarder
• Norman: r'tèrgi