decubitus

Borrowed from New Latin dēcubitus (“lying down”).

• IPA^(key): /dɪˈkjuː.bɪt.əs/

decubitus (plural decubitus)

1. (medicine) The posture of someone in bed, lying down or reclining.
   • 2016, Mariano Scaglione, Ulrich Linsenmaier, Gerd Schueller, Emergency Radiology of the Chest and Cardiovascular System:

     The initial recesses of the pleural cavity filled with blood effusion are declivitous; they can vary according to the decubitus, whereas, with the progressive filling of the pleural cavity, blood is invariably collected in the lateral pleural spaces over the apex of the lung (apical cap): they are very large pleural effusions, in the order of about 800-1200 cc.

2. (pathology) Ellipsis of decubitus ulcer.

• “decubitus”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.

From dēcumbō (“to lie down”) +‎ -tus (action noun suffix), on the pattern of words such as accubitus from accumbō (“to lay oneself down at, to recline at table”).

• (modern Italianate Ecclesiastical) IPA^(key): [d̪eˈkuː.bi.t̪us]

dēcubitus m (genitive dēcubitūs); fourth declension (New Latin)

1. Lying down.

Fourth-declension noun.

• → English: decubitus
• → Spanish: decúbito