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BNC: 4917 COCA: 9974

serum

1 ENTRIES FOUND:
serum /ˈsirəm/ noun
plural serums or sera /ˈsirə/
serum
/ˈsirəm/
noun
plural serums or sera /ˈsirə/
Learner's definition of SERUM
[noncount] medical : the part of blood that is like water and that contains substances (called antibodies) that fight disease血清;抗毒血清
medical : serum from an animal's blood that can be added to a person's blood to prevent or cure disease免疫血清
[noncount]
[count]
[noncount] biology : the watery part of a fluid found in a plant(植物的)浆液,树液
BNC: 4917 COCA: 9974

serum

1 of 2

noun

se·​rum ˈsir-əm How to pronounce serum (audio)
plural sera ˈsir-ə How to pronounce serum (audio) or serums
1
: the watery, clear portion of an animal fluid:
a
: the clear, yellowish fluid that remains from blood plasma after clotting factors (such as fibrinogen and prothrombin) have been removed by clot formation : blood serum compare antiserum, convalescent serum
b
: a normal or pathological serous fluid (as in a blister)
c
: whey
2
: a usually lightweight cosmetic preparation especially for use on the face
specifically : a typically water-based, often concentrated preparation that lacks lubricating and thickening agents
an antiaging facial serum
3
: the watery part of a plant fluid
Latex. This, the natural product of the rubber tree, is a suspension of rubber droplets in a watery serum concentrated and stabilized in such a way that the dry rubber content is between 60 and 70 per cent. C. A. O'Flaherty
see also truth serum

serum

2 of 2

adjective

: occurring or found in the blood serum
serum cholesterol
serum antibodies

Example Sentences

Noun The patient was administered serum.
Recent Examples on the Web
Noun
The recent study from Harvard’s Ascherio got around this by looking at a massive archive of serum samples taken from people over 20 years. Sarah Zhang, The Atlantic, 3 Mar. 2022 In collaboration with the US Military, the research team examined data—collected from serum samples—from more than 10 million people on active duty in the US Armed Forces collected between 1993 and 2013. Jocelyn Solis-moreira, Health.com, 21 Jan. 2022 In the cohort, there were 801 members who developed MS and had banked up to three serum samples prior to their diagnosis. Beth Mole, Ars Technica, 13 Jan. 2022 Blood serum samples for the study were obtained from eight participants one week after their second Moderna shot. BostonGlobe.com, 29 June 2021 The serum samples were from four people who caught the disease after working in a copper mine in Yunnan province. Bloomberg.com, 21 Nov. 2020 The Dry Dock blowout bars aboard Virgin Voyages’ ships offer services exclusively using Kérastase products, so this serum can act as an extension of your vacation blowout, too. Kristin Corpuz, The Hollywood Reporter, 30 Aug. 2022 Tackle droopy eyelids and jowls with this liquid serum. Jacqueline Saguin, Good Housekeeping, 24 Aug. 2022 This cica and vitamin C serum packs a powerful combo that brightens skin and restores moisture. Ysolt Usigan, Woman's Day, 16 Aug. 2022 See More

Word History

Etymology

Noun

borrowed from Latin, "whey, wheylike fluid," of uncertain origin

Note: Latin serum has been conventionally linked with Greek orós, of identical meaning, and both compared with the Sanskrit verbal base sar-, allegedly meaning " flow" in Vedic texts (hence P. Chantraine in Dictionnaire étymologique de la langue grecque). More recently, however, this interpretation has been rejected, and sar- read as "run off"—hence Vedic Sanskrit ásarat "ran off," prasísarti "lets run, stretches, extends," not akin to sáraḥ "lake, pond" and related words, which describe still water. The Sanskrit etymon has been further compared with Greek hállomai "(I) spring, hop," Latin salīre "to jump" (see sally entry 2). If this is correct the Indo-European base is *sel-, and any connection to serum and orós impossible; these two words are left then without any certain etymology.

Adjective

from attributive use of serum entry 1

First Known Use

Noun

1651, in the meaning defined at sense 1

Adjective

1876, in the meaning defined above

Time Traveler
The first known use of serum was in 1651
BNC: 4917 COCA: 9974

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